Home / 19,947.38-29,920.98-5,155.04

Finding the Fourth Proportional to 19,947.38, 29,920.98 and 5,155.04

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Solution

The fourth proportional to 19,947.38, 29,920.98 and 5,155.04 is: 7,732.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.38 : 29,920.98 = 5,155.04 : x
  2. Step 2: Convert to fraction form
    19,947.38/29,920.98 = 5,155.04/x
  3. Step 3: Cross multiply
    19,947.38x = 29,920.98 × 5,155.04
  4. Step 4: Simplify right side
    19,947.38x = 154,243,848.74
  5. Step 5: Solve for x
    x = 154,243,848.74/19,947.38
  6. Step 6: Final answer
    x = 7,732.54

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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.