Home / 12,272.20-18,419.10-9,809.80

Finding the Fourth Proportional to 12,272.20, 18,419.10 and 9,809.80

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Solution

The fourth proportional to 12,272.20, 18,419.10 and 9,809.80 is: 14,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.20 : 18,419.10 = 9,809.80 : x
  2. Step 2: Convert to fraction form
    12,272.20/18,419.10 = 9,809.80/x
  3. Step 3: Cross multiply
    12,272.20x = 18,419.10 × 9,809.80
  4. Step 4: Simplify right side
    12,272.20x = 180,687,687.18
  5. Step 5: Solve for x
    x = 180,687,687.18/12,272.20
  6. Step 6: Final answer
    x = 14,723.33

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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.