Home / 19,961.32-29,942.08-5,169.20

Finding the Fourth Proportional to 19,961.32, 29,942.08 and 5,169.20

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Solution

The fourth proportional to 19,961.32, 29,942.08 and 5,169.20 is: 7,753.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.32 : 29,942.08 = 5,169.20 : x
  2. Step 2: Convert to fraction form
    19,961.32/29,942.08 = 5,169.20/x
  3. Step 3: Cross multiply
    19,961.32x = 29,942.08 × 5,169.20
  4. Step 4: Simplify right side
    19,961.32x = 154,776,599.94
  5. Step 5: Solve for x
    x = 154,776,599.94/19,961.32
  6. Step 6: Final answer
    x = 7,753.83

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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.