Home / 10,449.85-15,680.16-6,942.28

Finding the Fourth Proportional to 10,449.85, 15,680.16 and 6,942.28

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Solution

The fourth proportional to 10,449.85, 15,680.16 and 6,942.28 is: 10,417.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,449.85 : 15,680.16 = 6,942.28 : x
  2. Step 2: Convert to fraction form
    10,449.85/15,680.16 = 6,942.28/x
  3. Step 3: Cross multiply
    10,449.85x = 15,680.16 × 6,942.28
  4. Step 4: Simplify right side
    10,449.85x = 108,856,061.16
  5. Step 5: Solve for x
    x = 108,856,061.16/10,449.85
  6. Step 6: Final answer
    x = 10,417.00

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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.