Home / 39,226.40-54,132.79-21,321.44

Finding the Fourth Proportional to 39,226.40, 54,132.79 and 21,321.44

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Solution

The fourth proportional to 39,226.40, 54,132.79 and 21,321.44 is: 29,423.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,226.40 : 54,132.79 = 21,321.44 : x
  2. Step 2: Convert to fraction form
    39,226.40/54,132.79 = 21,321.44/x
  3. Step 3: Cross multiply
    39,226.40x = 54,132.79 × 21,321.44
  4. Step 4: Simplify right side
    39,226.40x = 1,154,189,116.05
  5. Step 5: Solve for x
    x = 1,154,189,116.05/39,226.40
  6. Step 6: Final answer
    x = 29,423.79

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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.