Home / 39,191.18-54,084.39-21,286.22

Finding the Fourth Proportional to 39,191.18, 54,084.39 and 21,286.22

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Solution

The fourth proportional to 39,191.18, 54,084.39 and 21,286.22 is: 29,375.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,191.18 : 54,084.39 = 21,286.22 : x
  2. Step 2: Convert to fraction form
    39,191.18/54,084.39 = 21,286.22/x
  3. Step 3: Cross multiply
    39,191.18x = 54,084.39 × 21,286.22
  4. Step 4: Simplify right side
    39,191.18x = 1,151,252,224.11
  5. Step 5: Solve for x
    x = 1,151,252,224.11/39,191.18
  6. Step 6: Final answer
    x = 29,375.29

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Half scale
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Double scale
Find fourth proportional to 39,192.18, 54,085.77 and 21,287.22
Similar ratio
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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.