Home / 10,381.91-15,563.30-4,140.43

Finding the Fourth Proportional to 10,381.91, 15,563.30 and 4,140.43

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Solution

The fourth proportional to 10,381.91, 15,563.30 and 4,140.43 is: 6,206.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.91 : 15,563.30 = 4,140.43 : x
  2. Step 2: Convert to fraction form
    10,381.91/15,563.30 = 4,140.43/x
  3. Step 3: Cross multiply
    10,381.91x = 15,563.30 × 4,140.43
  4. Step 4: Simplify right side
    10,381.91x = 64,438,694.61
  5. Step 5: Solve for x
    x = 64,438,694.61/10,381.91
  6. Step 6: Final answer
    x = 6,206.83

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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.