Home / 15,591.33-21,516.15-8,517.93

Finding the Fourth Proportional to 15,591.33, 21,516.15 and 8,517.93

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Solution

The fourth proportional to 15,591.33, 21,516.15 and 8,517.93 is: 11,754.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.33 : 21,516.15 = 8,517.93 : x
  2. Step 2: Convert to fraction form
    15,591.33/21,516.15 = 8,517.93/x
  3. Step 3: Cross multiply
    15,591.33x = 21,516.15 × 8,517.93
  4. Step 4: Simplify right side
    15,591.33x = 183,273,059.57
  5. Step 5: Solve for x
    x = 183,273,059.57/15,591.33
  6. Step 6: Final answer
    x = 11,754.81

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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.