Home / 39,363.98-54,321.99-21,459.42

Finding the Fourth Proportional to 39,363.98, 54,321.99 and 21,459.42

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Solution

The fourth proportional to 39,363.98, 54,321.99 and 21,459.42 is: 29,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,363.98 : 54,321.99 = 21,459.42 : x
  2. Step 2: Convert to fraction form
    39,363.98/54,321.99 = 21,459.42/x
  3. Step 3: Cross multiply
    39,363.98x = 54,321.99 × 21,459.42
  4. Step 4: Simplify right side
    39,363.98x = 1,165,718,398.65
  5. Step 5: Solve for x
    x = 1,165,718,398.65/39,363.98
  6. Step 6: Final answer
    x = 29,613.83

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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.