Home / 18,718.96-28,058.28-9,945.04

Finding the Fourth Proportional to 18,718.96, 28,058.28 and 9,945.04

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Solution

The fourth proportional to 18,718.96, 28,058.28 and 9,945.04 is: 14,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.96 : 28,058.28 = 9,945.04 : x
  2. Step 2: Convert to fraction form
    18,718.96/28,058.28 = 9,945.04/x
  3. Step 3: Cross multiply
    18,718.96x = 28,058.28 × 9,945.04
  4. Step 4: Simplify right side
    18,718.96x = 279,040,716.93
  5. Step 5: Solve for x
    x = 279,040,716.93/18,718.96
  6. Step 6: Final answer
    x = 14,906.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.