Home / 15,997.50-22,078.98-9,708.66

Finding the Fourth Proportional to 15,997.50, 22,078.98 and 9,708.66

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Solution

The fourth proportional to 15,997.50, 22,078.98 and 9,708.66 is: 13,399.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,997.50 : 22,078.98 = 9,708.66 : x
  2. Step 2: Convert to fraction form
    15,997.50/22,078.98 = 9,708.66/x
  3. Step 3: Cross multiply
    15,997.50x = 22,078.98 × 9,708.66
  4. Step 4: Simplify right side
    15,997.50x = 214,357,309.97
  5. Step 5: Solve for x
    x = 214,357,309.97/15,997.50
  6. Step 6: Final answer
    x = 13,399.43

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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.