Home / 21,486.20-29,650.49-11,925.53

Finding the Fourth Proportional to 21,486.20, 29,650.49 and 11,925.53

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Solution

The fourth proportional to 21,486.20, 29,650.49 and 11,925.53 is: 16,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.20 : 29,650.49 = 11,925.53 : x
  2. Step 2: Convert to fraction form
    21,486.20/29,650.49 = 11,925.53/x
  3. Step 3: Cross multiply
    21,486.20x = 29,650.49 × 11,925.53
  4. Step 4: Simplify right side
    21,486.20x = 353,597,600.13
  5. Step 5: Solve for x
    x = 353,597,600.13/21,486.20
  6. Step 6: Final answer
    x = 16,456.97

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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.