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Finding the Fourth Proportional to 18,860.60, 28,294.54 and 6,382.65

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Solution

The fourth proportional to 18,860.60, 28,294.54 and 6,382.65 is: 9,575.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.60 : 28,294.54 = 6,382.65 : x
  2. Step 2: Convert to fraction form
    18,860.60/28,294.54 = 6,382.65/x
  3. Step 3: Cross multiply
    18,860.60x = 28,294.54 × 6,382.65
  4. Step 4: Simplify right side
    18,860.60x = 180,594,145.73
  5. Step 5: Solve for x
    x = 180,594,145.73/18,860.60
  6. Step 6: Final answer
    x = 9,575.21

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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.