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Finding the Fourth Proportional to 22,470.30, 31,020.12 and 13,524.66

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Solution

The fourth proportional to 22,470.30, 31,020.12 and 13,524.66 is: 18,670.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,470.30 : 31,020.12 = 13,524.66 : x
  2. Step 2: Convert to fraction form
    22,470.30/31,020.12 = 13,524.66/x
  3. Step 3: Cross multiply
    22,470.30x = 31,020.12 × 13,524.66
  4. Step 4: Simplify right side
    22,470.30x = 419,536,576.16
  5. Step 5: Solve for x
    x = 419,536,576.16/22,470.30
  6. Step 6: Final answer
    x = 18,670.72

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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.