Home / 9,939.17-13,717.28-5,747.42

Finding the Fourth Proportional to 9,939.17, 13,717.28 and 5,747.42

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Solution

The fourth proportional to 9,939.17, 13,717.28 and 5,747.42 is: 7,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.17 : 13,717.28 = 5,747.42 : x
  2. Step 2: Convert to fraction form
    9,939.17/13,717.28 = 5,747.42/x
  3. Step 3: Cross multiply
    9,939.17x = 13,717.28 × 5,747.42
  4. Step 4: Simplify right side
    9,939.17x = 78,838,915.20
  5. Step 5: Solve for x
    x = 78,838,915.20/9,939.17
  6. Step 6: Final answer
    x = 7,932.15

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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.