Home / 39,658.88-54,732.76-21,757.38

Finding the Fourth Proportional to 39,658.88, 54,732.76 and 21,757.38

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Solution

The fourth proportional to 39,658.88, 54,732.76 and 21,757.38 is: 30,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.88 : 54,732.76 = 21,757.38 : x
  2. Step 2: Convert to fraction form
    39,658.88/54,732.76 = 21,757.38/x
  3. Step 3: Cross multiply
    39,658.88x = 54,732.76 × 21,757.38
  4. Step 4: Simplify right side
    39,658.88x = 1,190,841,320.51
  5. Step 5: Solve for x
    x = 1,190,841,320.51/39,658.88
  6. Step 6: Final answer
    x = 30,027.10

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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.