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Finding the Fourth Proportional to 15,040.24, 20,757.64 and 9,072.24

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Solution

The fourth proportional to 15,040.24, 20,757.64 and 9,072.24 is: 12,520.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.24 : 20,757.64 = 9,072.24 : x
  2. Step 2: Convert to fraction form
    15,040.24/20,757.64 = 9,072.24/x
  3. Step 3: Cross multiply
    15,040.24x = 20,757.64 × 9,072.24
  4. Step 4: Simplify right side
    15,040.24x = 188,318,291.91
  5. Step 5: Solve for x
    x = 188,318,291.91/15,040.24
  6. Step 6: Final answer
    x = 12,520.96

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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.