Home / 20,625.30-28,462.80-11,193.84

Finding the Fourth Proportional to 20,625.30, 28,462.80 and 11,193.84

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Solution

The fourth proportional to 20,625.30, 28,462.80 and 11,193.84 is: 15,447.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.30 : 28,462.80 = 11,193.84 : x
  2. Step 2: Convert to fraction form
    20,625.30/28,462.80 = 11,193.84/x
  3. Step 3: Cross multiply
    20,625.30x = 28,462.80 × 11,193.84
  4. Step 4: Simplify right side
    20,625.30x = 318,608,029.15
  5. Step 5: Solve for x
    x = 318,608,029.15/20,625.30
  6. Step 6: Final answer
    x = 15,447.44

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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.