Home / 10,787.20-16,180.53-3,390.64

Finding the Fourth Proportional to 10,787.20, 16,180.53 and 3,390.64

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Solution

The fourth proportional to 10,787.20, 16,180.53 and 3,390.64 is: 5,085.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.20 : 16,180.53 = 3,390.64 : x
  2. Step 2: Convert to fraction form
    10,787.20/16,180.53 = 3,390.64/x
  3. Step 3: Cross multiply
    10,787.20x = 16,180.53 × 3,390.64
  4. Step 4: Simplify right side
    10,787.20x = 54,862,352.24
  5. Step 5: Solve for x
    x = 54,862,352.24/10,787.20
  6. Step 6: Final answer
    x = 5,085.88

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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.