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Finding the Fourth Proportional to 13,080.88, 18,052.48 and 7,338.88

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Solution

The fourth proportional to 13,080.88, 18,052.48 and 7,338.88 is: 10,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.88 : 18,052.48 = 7,338.88 : x
  2. Step 2: Convert to fraction form
    13,080.88/18,052.48 = 7,338.88/x
  3. Step 3: Cross multiply
    13,080.88x = 18,052.48 × 7,338.88
  4. Step 4: Simplify right side
    13,080.88x = 132,484,984.42
  5. Step 5: Solve for x
    x = 132,484,984.42/13,080.88
  6. Step 6: Final answer
    x = 10,128.14

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1.5x scale

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.