Home / 15,659.97-21,610.85-8,489.94

Finding the Fourth Proportional to 15,659.97, 21,610.85 and 8,489.94

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Solution

The fourth proportional to 15,659.97, 21,610.85 and 8,489.94 is: 11,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.97 : 21,610.85 = 8,489.94 : x
  2. Step 2: Convert to fraction form
    15,659.97/21,610.85 = 8,489.94/x
  3. Step 3: Cross multiply
    15,659.97x = 21,610.85 × 8,489.94
  4. Step 4: Simplify right side
    15,659.97x = 183,474,819.85
  5. Step 5: Solve for x
    x = 183,474,819.85/15,659.97
  6. Step 6: Final answer
    x = 11,716.17

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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.