Home / 10,382.20-15,576.48-5,451.28

Finding the Fourth Proportional to 10,382.20, 15,576.48 and 5,451.28

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Solution

The fourth proportional to 10,382.20, 15,576.48 and 5,451.28 is: 8,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,382.20 : 15,576.48 = 5,451.28 : x
  2. Step 2: Convert to fraction form
    10,382.20/15,576.48 = 5,451.28/x
  3. Step 3: Cross multiply
    10,382.20x = 15,576.48 × 5,451.28
  4. Step 4: Simplify right side
    10,382.20x = 84,911,753.89
  5. Step 5: Solve for x
    x = 84,911,753.89/10,382.20
  6. Step 6: Final answer
    x = 8,178.59

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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.