Home / 21,515.38-29,691.03-11,824.95

Finding the Fourth Proportional to 21,515.38, 29,691.03 and 11,824.95

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Solution

The fourth proportional to 21,515.38, 29,691.03 and 11,824.95 is: 16,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.38 : 29,691.03 = 11,824.95 : x
  2. Step 2: Convert to fraction form
    21,515.38/29,691.03 = 11,824.95/x
  3. Step 3: Cross multiply
    21,515.38x = 29,691.03 × 11,824.95
  4. Step 4: Simplify right side
    21,515.38x = 351,095,100.88
  5. Step 5: Solve for x
    x = 351,095,100.88/21,515.38
  6. Step 6: Final answer
    x = 16,318.33

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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.