Home / 28,513.58-39,347.97-15,940.76

Finding the Fourth Proportional to 28,513.58, 39,347.97 and 15,940.76

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Solution

The fourth proportional to 28,513.58, 39,347.97 and 15,940.76 is: 21,997.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.58 : 39,347.97 = 15,940.76 : x
  2. Step 2: Convert to fraction form
    28,513.58/39,347.97 = 15,940.76/x
  3. Step 3: Cross multiply
    28,513.58x = 39,347.97 × 15,940.76
  4. Step 4: Simplify right side
    28,513.58x = 627,236,546.26
  5. Step 5: Solve for x
    x = 627,236,546.26/28,513.58
  6. Step 6: Final answer
    x = 21,997.82

Related Problems

Find fourth proportional to 14,256.79, 19,673.99 and 7,970.38
Half scale
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Double scale
Find fourth proportional to 28,514.58, 39,349.35 and 15,941.76
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.