Home / 39,381.38-54,356.64-22,395.55

Finding the Fourth Proportional to 39,381.38, 54,356.64 and 22,395.55

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Solution

The fourth proportional to 39,381.38, 54,356.64 and 22,395.55 is: 30,911.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.38 : 54,356.64 = 22,395.55 : x
  2. Step 2: Convert to fraction form
    39,381.38/54,356.64 = 22,395.55/x
  3. Step 3: Cross multiply
    39,381.38x = 54,356.64 × 22,395.55
  4. Step 4: Simplify right side
    39,381.38x = 1,217,346,848.95
  5. Step 5: Solve for x
    x = 1,217,346,848.95/39,381.38
  6. Step 6: Final answer
    x = 30,911.74

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Half scale
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Double scale
Find fourth proportional to 39,382.38, 54,358.02 and 22,396.55
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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.