Home / 28,487.78-39,311.22-17,155.10

Finding the Fourth Proportional to 28,487.78, 39,311.22 and 17,155.10

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Solution

The fourth proportional to 28,487.78, 39,311.22 and 17,155.10 is: 23,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.78 : 39,311.22 = 17,155.10 : x
  2. Step 2: Convert to fraction form
    28,487.78/39,311.22 = 17,155.10/x
  3. Step 3: Cross multiply
    28,487.78x = 39,311.22 × 17,155.10
  4. Step 4: Simplify right side
    28,487.78x = 674,387,910.22
  5. Step 5: Solve for x
    x = 674,387,910.22/28,487.78
  6. Step 6: Final answer
    x = 23,672.88

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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.