Home / 28,173.96-38,882.70-15,602.76

Finding the Fourth Proportional to 28,173.96, 38,882.70 and 15,602.76

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Solution

The fourth proportional to 28,173.96, 38,882.70 and 15,602.76 is: 21,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.96 : 38,882.70 = 15,602.76 : x
  2. Step 2: Convert to fraction form
    28,173.96/38,882.70 = 15,602.76/x
  3. Step 3: Cross multiply
    28,173.96x = 38,882.70 × 15,602.76
  4. Step 4: Simplify right side
    28,173.96x = 606,677,436.25
  5. Step 5: Solve for x
    x = 606,677,436.25/28,173.96
  6. Step 6: Final answer
    x = 21,533.27

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Find fourth proportional to 14,086.98, 19,441.35 and 7,801.38
Half scale
Find fourth proportional to 56,347.92, 77,765.40 and 31,205.52
Double scale
Find fourth proportional to 28,174.96, 38,884.08 and 15,603.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.