Home / 21,250.65-31,869.20-7,015.97

Finding the Fourth Proportional to 21,250.65, 31,869.20 and 7,015.97

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Solution

The fourth proportional to 21,250.65, 31,869.20 and 7,015.97 is: 10,521.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.65 : 31,869.20 = 7,015.97 : x
  2. Step 2: Convert to fraction form
    21,250.65/31,869.20 = 7,015.97/x
  3. Step 3: Cross multiply
    21,250.65x = 31,869.20 × 7,015.97
  4. Step 4: Simplify right side
    21,250.65x = 223,593,229.61
  5. Step 5: Solve for x
    x = 223,593,229.61/21,250.65
  6. Step 6: Final answer
    x = 10,521.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.