Home / 19,439.11-29,158.72-5,399.90

Finding the Fourth Proportional to 19,439.11, 29,158.72 and 5,399.90

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Solution

The fourth proportional to 19,439.11, 29,158.72 and 5,399.90 is: 8,099.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,439.11 : 29,158.72 = 5,399.90 : x
  2. Step 2: Convert to fraction form
    19,439.11/29,158.72 = 5,399.90/x
  3. Step 3: Cross multiply
    19,439.11x = 29,158.72 × 5,399.90
  4. Step 4: Simplify right side
    19,439.11x = 157,454,122.18
  5. Step 5: Solve for x
    x = 157,454,122.18/19,439.11
  6. Step 6: Final answer
    x = 8,099.86

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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.