Home / 12,272.22-18,381.21-9,478.62

Finding the Fourth Proportional to 12,272.22, 18,381.21 and 9,478.62

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Solution

The fourth proportional to 12,272.22, 18,381.21 and 9,478.62 is: 14,196.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.22 : 18,381.21 = 9,478.62 : x
  2. Step 2: Convert to fraction form
    12,272.22/18,381.21 = 9,478.62/x
  3. Step 3: Cross multiply
    12,272.22x = 18,381.21 × 9,478.62
  4. Step 4: Simplify right side
    12,272.22x = 174,228,504.73
  5. Step 5: Solve for x
    x = 174,228,504.73/12,272.22
  6. Step 6: Final answer
    x = 14,196.98

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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.