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Finding the Fourth Proportional to 13,164, 18,166.44 and 7,575.12

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Solution

The fourth proportional to 13,164, 18,166.44 and 7,575.12 is: 10,453.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164 : 18,166.44 = 7,575.12 : x
  2. Step 2: Convert to fraction form
    13,164/18,166.44 = 7,575.12/x
  3. Step 3: Cross multiply
    13,164x = 18,166.44 × 7,575.12
  4. Step 4: Simplify right side
    13,164x = 137,612,962.97
  5. Step 5: Solve for x
    x = 137,612,962.97/13,164
  6. Step 6: Final answer
    x = 10,453.73

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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.