Home / 28,177.20-38,886.56-15,602.80

Finding the Fourth Proportional to 28,177.20, 38,886.56 and 15,602.80

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Solution

The fourth proportional to 28,177.20, 38,886.56 and 15,602.80 is: 21,532.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.20 : 38,886.56 = 15,602.80 : x
  2. Step 2: Convert to fraction form
    28,177.20/38,886.56 = 15,602.80/x
  3. Step 3: Cross multiply
    28,177.20x = 38,886.56 × 15,602.80
  4. Step 4: Simplify right side
    28,177.20x = 606,739,218.37
  5. Step 5: Solve for x
    x = 606,739,218.37/28,177.20
  6. Step 6: Final answer
    x = 21,532.98

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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.