Home / 10,617.43-15,987.85-7,863.61

Finding the Fourth Proportional to 10,617.43, 15,987.85 and 7,863.61

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Solution

The fourth proportional to 10,617.43, 15,987.85 and 7,863.61 is: 11,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,617.43 : 15,987.85 = 7,863.61 : x
  2. Step 2: Convert to fraction form
    10,617.43/15,987.85 = 7,863.61/x
  3. Step 3: Cross multiply
    10,617.43x = 15,987.85 × 7,863.61
  4. Step 4: Simplify right side
    10,617.43x = 125,722,137.20
  5. Step 5: Solve for x
    x = 125,722,137.20/10,617.43
  6. Step 6: Final answer
    x = 11,841.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.