Home / 18,305.16-25,261.17-9,921.66

Finding the Fourth Proportional to 18,305.16, 25,261.17 and 9,921.66

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Solution

The fourth proportional to 18,305.16, 25,261.17 and 9,921.66 is: 13,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.16 : 25,261.17 = 9,921.66 : x
  2. Step 2: Convert to fraction form
    18,305.16/25,261.17 = 9,921.66/x
  3. Step 3: Cross multiply
    18,305.16x = 25,261.17 × 9,921.66
  4. Step 4: Simplify right side
    18,305.16x = 250,632,739.94
  5. Step 5: Solve for x
    x = 250,632,739.94/18,305.16
  6. Step 6: Final answer
    x = 13,691.92

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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.