Home / 19,971.32-29,957.75-5,179.85

Finding the Fourth Proportional to 19,971.32, 29,957.75 and 5,179.85

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Solution

The fourth proportional to 19,971.32, 29,957.75 and 5,179.85 is: 7,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.32 : 29,957.75 = 5,179.85 : x
  2. Step 2: Convert to fraction form
    19,971.32/29,957.75 = 5,179.85/x
  3. Step 3: Cross multiply
    19,971.32x = 29,957.75 × 5,179.85
  4. Step 4: Simplify right side
    19,971.32x = 155,176,651.34
  5. Step 5: Solve for x
    x = 155,176,651.34/19,971.32
  6. Step 6: Final answer
    x = 7,769.97

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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.