Home / 20,825.17-28,737.59-11,393.13

Finding the Fourth Proportional to 20,825.17, 28,737.59 and 11,393.13

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Solution

The fourth proportional to 20,825.17, 28,737.59 and 11,393.13 is: 15,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.17 : 28,737.59 = 11,393.13 : x
  2. Step 2: Convert to fraction form
    20,825.17/28,737.59 = 11,393.13/x
  3. Step 3: Cross multiply
    20,825.17x = 28,737.59 × 11,393.13
  4. Step 4: Simplify right side
    20,825.17x = 327,411,098.76
  5. Step 5: Solve for x
    x = 327,411,098.76/20,825.17
  6. Step 6: Final answer
    x = 15,721.89

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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.