Home / 10,787.47-16,157.79-5,229.15

Finding the Fourth Proportional to 10,787.47, 16,157.79 and 5,229.15

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Solution

The fourth proportional to 10,787.47, 16,157.79 and 5,229.15 is: 7,832.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.47 : 16,157.79 = 5,229.15 : x
  2. Step 2: Convert to fraction form
    10,787.47/16,157.79 = 5,229.15/x
  3. Step 3: Cross multiply
    10,787.47x = 16,157.79 × 5,229.15
  4. Step 4: Simplify right side
    10,787.47x = 84,491,507.58
  5. Step 5: Solve for x
    x = 84,491,507.58/10,787.47
  6. Step 6: Final answer
    x = 7,832.37

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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.