Home / 12,531.14-18,753.20-7,785.35

Finding the Fourth Proportional to 12,531.14, 18,753.20 and 7,785.35

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Solution

The fourth proportional to 12,531.14, 18,753.20 and 7,785.35 is: 11,650.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.14 : 18,753.20 = 7,785.35 : x
  2. Step 2: Convert to fraction form
    12,531.14/18,753.20 = 7,785.35/x
  3. Step 3: Cross multiply
    12,531.14x = 18,753.20 × 7,785.35
  4. Step 4: Simplify right side
    12,531.14x = 146,000,092.93
  5. Step 5: Solve for x
    x = 146,000,092.93/12,531.14
  6. Step 6: Final answer
    x = 11,650.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.