Home / 39,189.82-54,082.34-21,285.17

Finding the Fourth Proportional to 39,189.82, 54,082.34 and 21,285.17

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Solution

The fourth proportional to 39,189.82, 54,082.34 and 21,285.17 is: 29,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189.82 : 54,082.34 = 21,285.17 : x
  2. Step 2: Convert to fraction form
    39,189.82/54,082.34 = 21,285.17/x
  3. Step 3: Cross multiply
    39,189.82x = 54,082.34 × 21,285.17
  4. Step 4: Simplify right side
    39,189.82x = 1,151,151,694.47
  5. Step 5: Solve for x
    x = 1,151,151,694.47/39,189.82
  6. Step 6: Final answer
    x = 29,373.75

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Double scale
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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.