Home / 12,542.31-18,702.92-12,429.89

Finding the Fourth Proportional to 12,542.31, 18,702.92 and 12,429.89

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Solution

The fourth proportional to 12,542.31, 18,702.92 and 12,429.89 is: 18,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,542.31 : 18,702.92 = 12,429.89 : x
  2. Step 2: Convert to fraction form
    12,542.31/18,702.92 = 12,429.89/x
  3. Step 3: Cross multiply
    12,542.31x = 18,702.92 × 12,429.89
  4. Step 4: Simplify right side
    12,542.31x = 232,475,082.61
  5. Step 5: Solve for x
    x = 232,475,082.61/12,542.31
  6. Step 6: Final answer
    x = 18,535.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.