Home / 38,121.18-57,185.99-13,158.39

Finding the Fourth Proportional to 38,121.18, 57,185.99 and 13,158.39

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Solution

The fourth proportional to 38,121.18, 57,185.99 and 13,158.39 is: 19,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.18 : 57,185.99 = 13,158.39 : x
  2. Step 2: Convert to fraction form
    38,121.18/57,185.99 = 13,158.39/x
  3. Step 3: Cross multiply
    38,121.18x = 57,185.99 × 13,158.39
  4. Step 4: Simplify right side
    38,121.18x = 752,475,707.61
  5. Step 5: Solve for x
    x = 752,475,707.61/38,121.18
  6. Step 6: Final answer
    x = 19,739.05

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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.