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Finding the Fourth Proportional to 18,836.82, 28,255.41 and 5,689.71

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Solution

The fourth proportional to 18,836.82, 28,255.41 and 5,689.71 is: 8,534.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.82 : 28,255.41 = 5,689.71 : x
  2. Step 2: Convert to fraction form
    18,836.82/28,255.41 = 5,689.71/x
  3. Step 3: Cross multiply
    18,836.82x = 28,255.41 × 5,689.71
  4. Step 4: Simplify right side
    18,836.82x = 160,765,088.83
  5. Step 5: Solve for x
    x = 160,765,088.83/18,836.82
  6. Step 6: Final answer
    x = 8,534.62

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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.