Home / 20,937.20-28,893.20-11,377.04

Finding the Fourth Proportional to 20,937.20, 28,893.20 and 11,377.04

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Solution

The fourth proportional to 20,937.20, 28,893.20 and 11,377.04 is: 15,700.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.20 : 28,893.20 = 11,377.04 : x
  2. Step 2: Convert to fraction form
    20,937.20/28,893.20 = 11,377.04/x
  3. Step 3: Cross multiply
    20,937.20x = 28,893.20 × 11,377.04
  4. Step 4: Simplify right side
    20,937.20x = 328,719,092.13
  5. Step 5: Solve for x
    x = 328,719,092.13/20,937.20
  6. Step 6: Final answer
    x = 15,700.24

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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.