Home / 21,245.32-29,319.25-11,685.61

Finding the Fourth Proportional to 21,245.32, 29,319.25 and 11,685.61

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Solution

The fourth proportional to 21,245.32, 29,319.25 and 11,685.61 is: 16,126.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.32 : 29,319.25 = 11,685.61 : x
  2. Step 2: Convert to fraction form
    21,245.32/29,319.25 = 11,685.61/x
  3. Step 3: Cross multiply
    21,245.32x = 29,319.25 × 11,685.61
  4. Step 4: Simplify right side
    21,245.32x = 342,613,115.97
  5. Step 5: Solve for x
    x = 342,613,115.97/21,245.32
  6. Step 6: Final answer
    x = 16,126.53

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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.