Home / 39,145.33-54,020.32-21,239.97

Finding the Fourth Proportional to 39,145.33, 54,020.32 and 21,239.97

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Solution

The fourth proportional to 39,145.33, 54,020.32 and 21,239.97 is: 29,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,145.33 : 54,020.32 = 21,239.97 : x
  2. Step 2: Convert to fraction form
    39,145.33/54,020.32 = 21,239.97/x
  3. Step 3: Cross multiply
    39,145.33x = 54,020.32 × 21,239.97
  4. Step 4: Simplify right side
    39,145.33x = 1,147,390,024.38
  5. Step 5: Solve for x
    x = 1,147,390,024.38/39,145.33
  6. Step 6: Final answer
    x = 29,311.04

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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.