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Finding the Fourth Proportional to 18,627.71, 27,906.39 and 14,447.24

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Solution

The fourth proportional to 18,627.71, 27,906.39 and 14,447.24 is: 21,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.71 : 27,906.39 = 14,447.24 : x
  2. Step 2: Convert to fraction form
    18,627.71/27,906.39 = 14,447.24/x
  3. Step 3: Cross multiply
    18,627.71x = 27,906.39 × 14,447.24
  4. Step 4: Simplify right side
    18,627.71x = 403,170,313.86
  5. Step 5: Solve for x
    x = 403,170,313.86/18,627.71
  6. Step 6: Final answer
    x = 21,643.58

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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.