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Finding the Fourth Proportional to 18,965.92, 28,454.40 and 5,820.22

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Solution

The fourth proportional to 18,965.92, 28,454.40 and 5,820.22 is: 8,732.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.92 : 28,454.40 = 5,820.22 : x
  2. Step 2: Convert to fraction form
    18,965.92/28,454.40 = 5,820.22/x
  3. Step 3: Cross multiply
    18,965.92x = 28,454.40 × 5,820.22
  4. Step 4: Simplify right side
    18,965.92x = 165,610,867.97
  5. Step 5: Solve for x
    x = 165,610,867.97/18,965.92
  6. Step 6: Final answer
    x = 8,732.02

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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.