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Finding the Fourth Proportional to 11,080.16, 15,290.80 and 6,112.16

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Solution

The fourth proportional to 11,080.16, 15,290.80 and 6,112.16 is: 8,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,080.16 : 15,290.80 = 6,112.16 : x
  2. Step 2: Convert to fraction form
    11,080.16/15,290.80 = 6,112.16/x
  3. Step 3: Cross multiply
    11,080.16x = 15,290.80 × 6,112.16
  4. Step 4: Simplify right side
    11,080.16x = 93,459,816.13
  5. Step 5: Solve for x
    x = 93,459,816.13/11,080.16
  6. Step 6: Final answer
    x = 8,434.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.