Home / 10,381.30-15,571.87-2,590.11

Finding the Fourth Proportional to 10,381.30, 15,571.87 and 2,590.11

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Solution

The fourth proportional to 10,381.30, 15,571.87 and 2,590.11 is: 3,885.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.30 : 15,571.87 = 2,590.11 : x
  2. Step 2: Convert to fraction form
    10,381.30/15,571.87 = 2,590.11/x
  3. Step 3: Cross multiply
    10,381.30x = 15,571.87 × 2,590.11
  4. Step 4: Simplify right side
    10,381.30x = 40,332,849.73
  5. Step 5: Solve for x
    x = 40,332,849.73/10,381.30
  6. Step 6: Final answer
    x = 3,885.15

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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.