Home / 18,349.11-25,321.10-9,965.43

Finding the Fourth Proportional to 18,349.11, 25,321.10 and 9,965.43

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Solution

The fourth proportional to 18,349.11, 25,321.10 and 9,965.43 is: 13,751.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.11 : 25,321.10 = 9,965.43 : x
  2. Step 2: Convert to fraction form
    18,349.11/25,321.10 = 9,965.43/x
  3. Step 3: Cross multiply
    18,349.11x = 25,321.10 × 9,965.43
  4. Step 4: Simplify right side
    18,349.11x = 252,335,599.75
  5. Step 5: Solve for x
    x = 252,335,599.75/18,349.11
  6. Step 6: Final answer
    x = 13,751.93

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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.