Home / 18,305.12-25,261.07-9,921.62

Finding the Fourth Proportional to 18,305.12, 25,261.07 and 9,921.62

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Solution

The fourth proportional to 18,305.12, 25,261.07 and 9,921.62 is: 13,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.12 : 25,261.07 = 9,921.62 : x
  2. Step 2: Convert to fraction form
    18,305.12/25,261.07 = 9,921.62/x
  3. Step 3: Cross multiply
    18,305.12x = 25,261.07 × 9,921.62
  4. Step 4: Simplify right side
    18,305.12x = 250,630,561.42
  5. Step 5: Solve for x
    x = 250,630,561.42/18,305.12
  6. Step 6: Final answer
    x = 13,691.83

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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.