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Finding the Fourth Proportional to 18,391.46, 25,414.65 and 15,033.02

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Solution

The fourth proportional to 18,391.46, 25,414.65 and 15,033.02 is: 20,773.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.46 : 25,414.65 = 15,033.02 : x
  2. Step 2: Convert to fraction form
    18,391.46/25,414.65 = 15,033.02/x
  3. Step 3: Cross multiply
    18,391.46x = 25,414.65 × 15,033.02
  4. Step 4: Simplify right side
    18,391.46x = 382,058,814.67
  5. Step 5: Solve for x
    x = 382,058,814.67/18,391.46
  6. Step 6: Final answer
    x = 20,773.71

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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.