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Finding the Fourth Proportional to 19,925.91, 29,881.53 and 8,679.87

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Solution

The fourth proportional to 19,925.91, 29,881.53 and 8,679.87 is: 13,016.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,925.91 : 29,881.53 = 8,679.87 : x
  2. Step 2: Convert to fraction form
    19,925.91/29,881.53 = 8,679.87/x
  3. Step 3: Cross multiply
    19,925.91x = 29,881.53 × 8,679.87
  4. Step 4: Simplify right side
    19,925.91x = 259,367,795.80
  5. Step 5: Solve for x
    x = 259,367,795.80/19,925.91
  6. Step 6: Final answer
    x = 13,016.61

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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.