Home / 19,872.31-29,808.35-5,081.20

Finding the Fourth Proportional to 19,872.31, 29,808.35 and 5,081.20

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Solution

The fourth proportional to 19,872.31, 29,808.35 and 5,081.20 is: 7,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.31 : 29,808.35 = 5,081.20 : x
  2. Step 2: Convert to fraction form
    19,872.31/29,808.35 = 5,081.20/x
  3. Step 3: Cross multiply
    19,872.31x = 29,808.35 × 5,081.20
  4. Step 4: Simplify right side
    19,872.31x = 151,462,162.61
  5. Step 5: Solve for x
    x = 151,462,162.61/19,872.31
  6. Step 6: Final answer
    x = 7,621.77

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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.