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Finding the Fourth Proportional to 18,468.60, 27,712.01 and 11,446.71

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Solution

The fourth proportional to 18,468.60, 27,712.01 and 11,446.71 is: 17,175.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.60 : 27,712.01 = 11,446.71 : x
  2. Step 2: Convert to fraction form
    18,468.60/27,712.01 = 11,446.71/x
  3. Step 3: Cross multiply
    18,468.60x = 27,712.01 × 11,446.71
  4. Step 4: Simplify right side
    18,468.60x = 317,211,341.99
  5. Step 5: Solve for x
    x = 317,211,341.99/18,468.60
  6. Step 6: Final answer
    x = 17,175.71

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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.