Home / 39,839.13-54,977.85-21,934.17

Finding the Fourth Proportional to 39,839.13, 54,977.85 and 21,934.17

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Solution

The fourth proportional to 39,839.13, 54,977.85 and 21,934.17 is: 30,269.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,839.13 : 54,977.85 = 21,934.17 : x
  2. Step 2: Convert to fraction form
    39,839.13/54,977.85 = 21,934.17/x
  3. Step 3: Cross multiply
    39,839.13x = 54,977.85 × 21,934.17
  4. Step 4: Simplify right side
    39,839.13x = 1,205,893,508.13
  5. Step 5: Solve for x
    x = 1,205,893,508.13/39,839.13
  6. Step 6: Final answer
    x = 30,269.07

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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.