Home / 38,079.01-57,120.64-11,781.70

Finding the Fourth Proportional to 38,079.01, 57,120.64 and 11,781.70

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Solution

The fourth proportional to 38,079.01, 57,120.64 and 11,781.70 is: 17,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,079.01 : 57,120.64 = 11,781.70 : x
  2. Step 2: Convert to fraction form
    38,079.01/57,120.64 = 11,781.70/x
  3. Step 3: Cross multiply
    38,079.01x = 57,120.64 × 11,781.70
  4. Step 4: Simplify right side
    38,079.01x = 672,978,459.61
  5. Step 5: Solve for x
    x = 672,978,459.61/38,079.01
  6. Step 6: Final answer
    x = 17,673.21

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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.