Home / 39,230.92-54,138.13-21,325.47

Finding the Fourth Proportional to 39,230.92, 54,138.13 and 21,325.47

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Solution

The fourth proportional to 39,230.92, 54,138.13 and 21,325.47 is: 29,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,230.92 : 54,138.13 = 21,325.47 : x
  2. Step 2: Convert to fraction form
    39,230.92/54,138.13 = 21,325.47/x
  3. Step 3: Cross multiply
    39,230.92x = 54,138.13 × 21,325.47
  4. Step 4: Simplify right side
    39,230.92x = 1,154,521,067.17
  5. Step 5: Solve for x
    x = 1,154,521,067.17/39,230.92
  6. Step 6: Final answer
    x = 29,428.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.