Home / 39,308.75-54,247.04-21,404.73

Finding the Fourth Proportional to 39,308.75, 54,247.04 and 21,404.73

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Solution

The fourth proportional to 39,308.75, 54,247.04 and 21,404.73 is: 29,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.75 : 54,247.04 = 21,404.73 : x
  2. Step 2: Convert to fraction form
    39,308.75/54,247.04 = 21,404.73/x
  3. Step 3: Cross multiply
    39,308.75x = 54,247.04 × 21,404.73
  4. Step 4: Simplify right side
    39,308.75x = 1,161,143,244.50
  5. Step 5: Solve for x
    x = 1,161,143,244.50/39,308.75
  6. Step 6: Final answer
    x = 29,539.05

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Half scale
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Double scale
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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.