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Finding the Fourth Proportional to 13,080.90, 18,052.02 and 7,113

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Solution

The fourth proportional to 13,080.90, 18,052.02 and 7,113 is: 9,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.90 : 18,052.02 = 7,113 : x
  2. Step 2: Convert to fraction form
    13,080.90/18,052.02 = 7,113/x
  3. Step 3: Cross multiply
    13,080.90x = 18,052.02 × 7,113
  4. Step 4: Simplify right side
    13,080.90x = 128,404,018.26
  5. Step 5: Solve for x
    x = 128,404,018.26/13,080.90
  6. Step 6: Final answer
    x = 9,816.15

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Why These Related Problems?

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