Home / 38,128.20-57,199.92-13,169.16

Finding the Fourth Proportional to 38,128.20, 57,199.92 and 13,169.16

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Solution

The fourth proportional to 38,128.20, 57,199.92 and 13,169.16 is: 19,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.20 : 57,199.92 = 13,169.16 : x
  2. Step 2: Convert to fraction form
    38,128.20/57,199.92 = 13,169.16/x
  3. Step 3: Cross multiply
    38,128.20x = 57,199.92 × 13,169.16
  4. Step 4: Simplify right side
    38,128.20x = 753,274,898.47
  5. Step 5: Solve for x
    x = 753,274,898.47/38,128.20
  6. Step 6: Final answer
    x = 19,756.37

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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.