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Finding the Fourth Proportional to 13,052.90, 18,013.88 and 7,387.64

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Solution

The fourth proportional to 13,052.90, 18,013.88 and 7,387.64 is: 10,195.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,052.90 : 18,013.88 = 7,387.64 : x
  2. Step 2: Convert to fraction form
    13,052.90/18,013.88 = 7,387.64/x
  3. Step 3: Cross multiply
    13,052.90x = 18,013.88 × 7,387.64
  4. Step 4: Simplify right side
    13,052.90x = 133,080,060.44
  5. Step 5: Solve for x
    x = 133,080,060.44/13,052.90
  6. Step 6: Final answer
    x = 10,195.44

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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.