Home / 19,872.98-29,809.39-5,081.87

Finding the Fourth Proportional to 19,872.98, 29,809.39 and 5,081.87

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Solution

The fourth proportional to 19,872.98, 29,809.39 and 5,081.87 is: 7,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.98 : 29,809.39 = 5,081.87 : x
  2. Step 2: Convert to fraction form
    19,872.98/29,809.39 = 5,081.87/x
  3. Step 3: Cross multiply
    19,872.98x = 29,809.39 × 5,081.87
  4. Step 4: Simplify right side
    19,872.98x = 151,487,444.76
  5. Step 5: Solve for x
    x = 151,487,444.76/19,872.98
  6. Step 6: Final answer
    x = 7,622.78

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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.