Home / 38,139.26-57,134.38-18,120.24

Finding the Fourth Proportional to 38,139.26, 57,134.38 and 18,120.24

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Solution

The fourth proportional to 38,139.26, 57,134.38 and 18,120.24 is: 27,144.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.26 : 57,134.38 = 18,120.24 : x
  2. Step 2: Convert to fraction form
    38,139.26/57,134.38 = 18,120.24/x
  3. Step 3: Cross multiply
    38,139.26x = 57,134.38 × 18,120.24
  4. Step 4: Simplify right side
    38,139.26x = 1,035,288,666.53
  5. Step 5: Solve for x
    x = 1,035,288,666.53/38,139.26
  6. Step 6: Final answer
    x = 27,144.96

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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.