Home / 39,320.38-54,262.74-21,415.38

Finding the Fourth Proportional to 39,320.38, 54,262.74 and 21,415.38

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Solution

The fourth proportional to 39,320.38, 54,262.74 and 21,415.38 is: 29,553.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,320.38 : 54,262.74 = 21,415.38 : x
  2. Step 2: Convert to fraction form
    39,320.38/54,262.74 = 21,415.38/x
  3. Step 3: Cross multiply
    39,320.38x = 54,262.74 × 21,415.38
  4. Step 4: Simplify right side
    39,320.38x = 1,162,057,073.76
  5. Step 5: Solve for x
    x = 1,162,057,073.76/39,320.38
  6. Step 6: Final answer
    x = 29,553.56

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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.