Home / 22,958.28-31,685.76-12,890.88

Finding the Fourth Proportional to 22,958.28, 31,685.76 and 12,890.88

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Solution

The fourth proportional to 22,958.28, 31,685.76 and 12,890.88 is: 17,791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,958.28 : 31,685.76 = 12,890.88 : x
  2. Step 2: Convert to fraction form
    22,958.28/31,685.76 = 12,890.88/x
  3. Step 3: Cross multiply
    22,958.28x = 31,685.76 × 12,890.88
  4. Step 4: Simplify right side
    22,958.28x = 408,457,329.87
  5. Step 5: Solve for x
    x = 408,457,329.87/22,958.28
  6. Step 6: Final answer
    x = 17,791.29

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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.