Home / 15,717.59-21,689.17-9,343.85

Finding the Fourth Proportional to 15,717.59, 21,689.17 and 9,343.85

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Solution

The fourth proportional to 15,717.59, 21,689.17 and 9,343.85 is: 12,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.59 : 21,689.17 = 9,343.85 : x
  2. Step 2: Convert to fraction form
    15,717.59/21,689.17 = 9,343.85/x
  3. Step 3: Cross multiply
    15,717.59x = 21,689.17 × 9,343.85
  4. Step 4: Simplify right side
    15,717.59x = 202,660,195.94
  5. Step 5: Solve for x
    x = 202,660,195.94/15,717.59
  6. Step 6: Final answer
    x = 12,893.85

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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.