Home / 12,282.40-18,432.96-9,003.88

Finding the Fourth Proportional to 12,282.40, 18,432.96 and 9,003.88

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Solution

The fourth proportional to 12,282.40, 18,432.96 and 9,003.88 is: 13,512.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,282.40 : 18,432.96 = 9,003.88 : x
  2. Step 2: Convert to fraction form
    12,282.40/18,432.96 = 9,003.88/x
  3. Step 3: Cross multiply
    12,282.40x = 18,432.96 × 9,003.88
  4. Step 4: Simplify right side
    12,282.40x = 165,968,159.88
  5. Step 5: Solve for x
    x = 165,968,159.88/12,282.40
  6. Step 6: Final answer
    x = 13,512.68

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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.