Home / 20,517.17-28,337.06-13,791.12

Finding the Fourth Proportional to 20,517.17, 28,337.06 and 13,791.12

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Solution

The fourth proportional to 20,517.17, 28,337.06 and 13,791.12 is: 19,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.17 : 28,337.06 = 13,791.12 : x
  2. Step 2: Convert to fraction form
    20,517.17/28,337.06 = 13,791.12/x
  3. Step 3: Cross multiply
    20,517.17x = 28,337.06 × 13,791.12
  4. Step 4: Simplify right side
    20,517.17x = 390,799,794.91
  5. Step 5: Solve for x
    x = 390,799,794.91/20,517.17
  6. Step 6: Final answer
    x = 19,047.45

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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.