Home / 15,374.75-21,217.43-8,660.61

Finding the Fourth Proportional to 15,374.75, 21,217.43 and 8,660.61

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Solution

The fourth proportional to 15,374.75, 21,217.43 and 8,660.61 is: 11,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.75 : 21,217.43 = 8,660.61 : x
  2. Step 2: Convert to fraction form
    15,374.75/21,217.43 = 8,660.61/x
  3. Step 3: Cross multiply
    15,374.75x = 21,217.43 × 8,660.61
  4. Step 4: Simplify right side
    15,374.75x = 183,755,843.13
  5. Step 5: Solve for x
    x = 183,755,843.13/15,374.75
  6. Step 6: Final answer
    x = 11,951.80

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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.