Home / 18,971.16-28,418.60-9,454.76

Finding the Fourth Proportional to 18,971.16, 28,418.60 and 9,454.76

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Solution

The fourth proportional to 18,971.16, 28,418.60 and 9,454.76 is: 14,163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.16 : 28,418.60 = 9,454.76 : x
  2. Step 2: Convert to fraction form
    18,971.16/28,418.60 = 9,454.76/x
  3. Step 3: Cross multiply
    18,971.16x = 28,418.60 × 9,454.76
  4. Step 4: Simplify right side
    18,971.16x = 268,691,042.54
  5. Step 5: Solve for x
    x = 268,691,042.54/18,971.16
  6. Step 6: Final answer
    x = 14,163.13

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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.