Home / 21,649.38-29,876.99-12,217.92

Finding the Fourth Proportional to 21,649.38, 29,876.99 and 12,217.92

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Solution

The fourth proportional to 21,649.38, 29,876.99 and 12,217.92 is: 16,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.38 : 29,876.99 = 12,217.92 : x
  2. Step 2: Convert to fraction form
    21,649.38/29,876.99 = 12,217.92/x
  3. Step 3: Cross multiply
    21,649.38x = 29,876.99 × 12,217.92
  4. Step 4: Simplify right side
    21,649.38x = 365,034,612.57
  5. Step 5: Solve for x
    x = 365,034,612.57/21,649.38
  6. Step 6: Final answer
    x = 16,861.20

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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.