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Finding the Fourth Proportional to 13,165.88, 18,168.87 and 7,197.54

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Solution

The fourth proportional to 13,165.88, 18,168.87 and 7,197.54 is: 9,932.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.88 : 18,168.87 = 7,197.54 : x
  2. Step 2: Convert to fraction form
    13,165.88/18,168.87 = 7,197.54/x
  3. Step 3: Cross multiply
    13,165.88x = 18,168.87 × 7,197.54
  4. Step 4: Simplify right side
    13,165.88x = 130,771,168.58
  5. Step 5: Solve for x
    x = 130,771,168.58/13,165.88
  6. Step 6: Final answer
    x = 9,932.58

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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.