Home / 21,819.27-30,110.62-12,387.83

Finding the Fourth Proportional to 21,819.27, 30,110.62 and 12,387.83

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Solution

The fourth proportional to 21,819.27, 30,110.62 and 12,387.83 is: 17,095.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.27 : 30,110.62 = 12,387.83 : x
  2. Step 2: Convert to fraction form
    21,819.27/30,110.62 = 12,387.83/x
  3. Step 3: Cross multiply
    21,819.27x = 30,110.62 × 12,387.83
  4. Step 4: Simplify right side
    21,819.27x = 373,005,241.75
  5. Step 5: Solve for x
    x = 373,005,241.75/21,819.27
  6. Step 6: Final answer
    x = 17,095.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.