Home / 13,285.92-18,330.42-7,542.42

Finding the Fourth Proportional to 13,285.92, 18,330.42 and 7,542.42

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Solution

The fourth proportional to 13,285.92, 18,330.42 and 7,542.42 is: 10,406.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.92 : 18,330.42 = 7,542.42 : x
  2. Step 2: Convert to fraction form
    13,285.92/18,330.42 = 7,542.42/x
  3. Step 3: Cross multiply
    13,285.92x = 18,330.42 × 7,542.42
  4. Step 4: Simplify right side
    13,285.92x = 138,255,726.42
  5. Step 5: Solve for x
    x = 138,255,726.42/13,285.92
  6. Step 6: Final answer
    x = 10,406.18

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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.