Home / 12,080.64-18,117.96-3,315.12

Finding the Fourth Proportional to 12,080.64, 18,117.96 and 3,315.12

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Solution

The fourth proportional to 12,080.64, 18,117.96 and 3,315.12 is: 4,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.64 : 18,117.96 = 3,315.12 : x
  2. Step 2: Convert to fraction form
    12,080.64/18,117.96 = 3,315.12/x
  3. Step 3: Cross multiply
    12,080.64x = 18,117.96 × 3,315.12
  4. Step 4: Simplify right side
    12,080.64x = 60,063,211.56
  5. Step 5: Solve for x
    x = 60,063,211.56/12,080.64
  6. Step 6: Final answer
    x = 4,971.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.