Home / 39,450.12-54,441.38-21,545.13

Finding the Fourth Proportional to 39,450.12, 54,441.38 and 21,545.13

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Solution

The fourth proportional to 39,450.12, 54,441.38 and 21,545.13 is: 29,732.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,450.12 : 54,441.38 = 21,545.13 : x
  2. Step 2: Convert to fraction form
    39,450.12/54,441.38 = 21,545.13/x
  3. Step 3: Cross multiply
    39,450.12x = 54,441.38 × 21,545.13
  4. Step 4: Simplify right side
    39,450.12x = 1,172,946,501.75
  5. Step 5: Solve for x
    x = 1,172,946,501.75/39,450.12
  6. Step 6: Final answer
    x = 29,732.39

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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.