Home / 21,991.52-30,351.60-17,311.04

Finding the Fourth Proportional to 21,991.52, 30,351.60 and 17,311.04

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Solution

The fourth proportional to 21,991.52, 30,351.60 and 17,311.04 is: 23,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.52 : 30,351.60 = 17,311.04 : x
  2. Step 2: Convert to fraction form
    21,991.52/30,351.60 = 17,311.04/x
  3. Step 3: Cross multiply
    21,991.52x = 30,351.60 × 17,311.04
  4. Step 4: Simplify right side
    21,991.52x = 525,417,761.66
  5. Step 5: Solve for x
    x = 525,417,761.66/21,991.52
  6. Step 6: Final answer
    x = 23,891.83

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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.