Home / 20,447.80-30,672.30-8,753.42

Finding the Fourth Proportional to 20,447.80, 30,672.30 and 8,753.42

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Solution

The fourth proportional to 20,447.80, 30,672.30 and 8,753.42 is: 13,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.80 : 30,672.30 = 8,753.42 : x
  2. Step 2: Convert to fraction form
    20,447.80/30,672.30 = 8,753.42/x
  3. Step 3: Cross multiply
    20,447.80x = 30,672.30 × 8,753.42
  4. Step 4: Simplify right side
    20,447.80x = 268,487,524.27
  5. Step 5: Solve for x
    x = 268,487,524.27/20,447.80
  6. Step 6: Final answer
    x = 13,130.39

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1.5x scale

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.