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Finding the Fourth Proportional to 18,734.41, 28,115.48 and 8,873.71

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Solution

The fourth proportional to 18,734.41, 28,115.48 and 8,873.71 is: 13,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,734.41 : 28,115.48 = 8,873.71 : x
  2. Step 2: Convert to fraction form
    18,734.41/28,115.48 = 8,873.71/x
  3. Step 3: Cross multiply
    18,734.41x = 28,115.48 × 8,873.71
  4. Step 4: Simplify right side
    18,734.41x = 249,488,616.03
  5. Step 5: Solve for x
    x = 249,488,616.03/18,734.41
  6. Step 6: Final answer
    x = 13,317.13

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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.