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Finding the Fourth Proportional to 18,348.58, 25,321.18 and 9,965.08

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Solution

The fourth proportional to 18,348.58, 25,321.18 and 9,965.08 is: 13,751.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.58 : 25,321.18 = 9,965.08 : x
  2. Step 2: Convert to fraction form
    18,348.58/25,321.18 = 9,965.08/x
  3. Step 3: Cross multiply
    18,348.58x = 25,321.18 × 9,965.08
  4. Step 4: Simplify right side
    18,348.58x = 252,327,584.39
  5. Step 5: Solve for x
    x = 252,327,584.39/18,348.58
  6. Step 6: Final answer
    x = 13,751.89

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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.