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Finding the Fourth Proportional to 18,734.14, 28,115.07 and 8,873.47

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Solution

The fourth proportional to 18,734.14, 28,115.07 and 8,873.47 is: 13,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,734.14 : 28,115.07 = 8,873.47 : x
  2. Step 2: Convert to fraction form
    18,734.14/28,115.07 = 8,873.47/x
  3. Step 3: Cross multiply
    18,734.14x = 28,115.07 × 8,873.47
  4. Step 4: Simplify right side
    18,734.14x = 249,478,230.19
  5. Step 5: Solve for x
    x = 249,478,230.19/18,734.14
  6. Step 6: Final answer
    x = 13,316.77

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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.