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Finding the Fourth Proportional to 18,398.68, 27,597.39 and 5,251.05

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Solution

The fourth proportional to 18,398.68, 27,597.39 and 5,251.05 is: 7,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.68 : 27,597.39 = 5,251.05 : x
  2. Step 2: Convert to fraction form
    18,398.68/27,597.39 = 5,251.05/x
  3. Step 3: Cross multiply
    18,398.68x = 27,597.39 × 5,251.05
  4. Step 4: Simplify right side
    18,398.68x = 144,915,255.07
  5. Step 5: Solve for x
    x = 144,915,255.07/18,398.68
  6. Step 6: Final answer
    x = 7,876.40

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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.