Home / 21,331.55-31,951.15-15,475.25

Finding the Fourth Proportional to 21,331.55, 31,951.15 and 15,475.25

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Solution

The fourth proportional to 21,331.55, 31,951.15 and 15,475.25 is: 23,179.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.55 : 31,951.15 = 15,475.25 : x
  2. Step 2: Convert to fraction form
    21,331.55/31,951.15 = 15,475.25/x
  3. Step 3: Cross multiply
    21,331.55x = 31,951.15 × 15,475.25
  4. Step 4: Simplify right side
    21,331.55x = 494,452,034.04
  5. Step 5: Solve for x
    x = 494,452,034.04/21,331.55
  6. Step 6: Final answer
    x = 23,179.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.