Home / 10,551.33-15,821.15-4,315.72

Finding the Fourth Proportional to 10,551.33, 15,821.15 and 4,315.72

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Solution

The fourth proportional to 10,551.33, 15,821.15 and 4,315.72 is: 6,471.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,551.33 : 15,821.15 = 4,315.72 : x
  2. Step 2: Convert to fraction form
    10,551.33/15,821.15 = 4,315.72/x
  3. Step 3: Cross multiply
    10,551.33x = 15,821.15 × 4,315.72
  4. Step 4: Simplify right side
    10,551.33x = 68,279,572.57
  5. Step 5: Solve for x
    x = 68,279,572.57/10,551.33
  6. Step 6: Final answer
    x = 6,471.18

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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.