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Finding the Fourth Proportional to 20,625, 28,462.62 and 11,193.62

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Solution

The fourth proportional to 20,625, 28,462.62 and 11,193.62 is: 15,447.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625 : 28,462.62 = 11,193.62 : x
  2. Step 2: Convert to fraction form
    20,625/28,462.62 = 11,193.62/x
  3. Step 3: Cross multiply
    20,625x = 28,462.62 × 11,193.62
  4. Step 4: Simplify right side
    20,625x = 318,599,752.48
  5. Step 5: Solve for x
    x = 318,599,752.48/20,625
  6. Step 6: Final answer
    x = 15,447.26

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1.5x scale

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.