Home / 20,578.20-28,398.42-11,625.90

Finding the Fourth Proportional to 20,578.20, 28,398.42 and 11,625.90

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Solution

The fourth proportional to 20,578.20, 28,398.42 and 11,625.90 is: 16,044.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.20 : 28,398.42 = 11,625.90 : x
  2. Step 2: Convert to fraction form
    20,578.20/28,398.42 = 11,625.90/x
  3. Step 3: Cross multiply
    20,578.20x = 28,398.42 × 11,625.90
  4. Step 4: Simplify right side
    20,578.20x = 330,157,191.08
  5. Step 5: Solve for x
    x = 330,157,191.08/20,578.20
  6. Step 6: Final answer
    x = 16,044.03

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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.