Home / 15,864.85-21,893.49-9,491.71

Finding the Fourth Proportional to 15,864.85, 21,893.49 and 9,491.71

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Solution

The fourth proportional to 15,864.85, 21,893.49 and 9,491.71 is: 13,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.85 : 21,893.49 = 9,491.71 : x
  2. Step 2: Convert to fraction form
    15,864.85/21,893.49 = 9,491.71/x
  3. Step 3: Cross multiply
    15,864.85x = 21,893.49 × 9,491.71
  4. Step 4: Simplify right side
    15,864.85x = 207,806,657.97
  5. Step 5: Solve for x
    x = 207,806,657.97/15,864.85
  6. Step 6: Final answer
    x = 13,098.56

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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.