Home / 22,959.28-31,687.14-12,891.88

Finding the Fourth Proportional to 22,959.28, 31,687.14 and 12,891.88

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Solution

The fourth proportional to 22,959.28, 31,687.14 and 12,891.88 is: 17,792.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,959.28 : 31,687.14 = 12,891.88 : x
  2. Step 2: Convert to fraction form
    22,959.28/31,687.14 = 12,891.88/x
  3. Step 3: Cross multiply
    22,959.28x = 31,687.14 × 12,891.88
  4. Step 4: Simplify right side
    22,959.28x = 408,506,806.42
  5. Step 5: Solve for x
    x = 408,506,806.42/22,959.28
  6. Step 6: Final answer
    x = 17,792.67

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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.