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Finding the Fourth Proportional to 22,512.40, 31,067.06 and 12,576.40

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Solution

The fourth proportional to 22,512.40, 31,067.06 and 12,576.40 is: 17,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,512.40 : 31,067.06 = 12,576.40 : x
  2. Step 2: Convert to fraction form
    22,512.40/31,067.06 = 12,576.40/x
  3. Step 3: Cross multiply
    22,512.40x = 31,067.06 × 12,576.40
  4. Step 4: Simplify right side
    22,512.40x = 390,711,773.38
  5. Step 5: Solve for x
    x = 390,711,773.38/22,512.40
  6. Step 6: Final answer
    x = 17,355.40

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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.