Home / 39,449.81-54,441.17-21,545.34

Finding the Fourth Proportional to 39,449.81, 54,441.17 and 21,545.34

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Solution

The fourth proportional to 39,449.81, 54,441.17 and 21,545.34 is: 29,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,449.81 : 54,441.17 = 21,545.34 : x
  2. Step 2: Convert to fraction form
    39,449.81/54,441.17 = 21,545.34/x
  3. Step 3: Cross multiply
    39,449.81x = 54,441.17 × 21,545.34
  4. Step 4: Simplify right side
    39,449.81x = 1,172,953,517.65
  5. Step 5: Solve for x
    x = 1,172,953,517.65/39,449.81
  6. Step 6: Final answer
    x = 29,732.81

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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.