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Finding the Fourth Proportional to 18,468.84, 27,716.22 and 14,318.40

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Solution

The fourth proportional to 18,468.84, 27,716.22 and 14,318.40 is: 21,487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.84 : 27,716.22 = 14,318.40 : x
  2. Step 2: Convert to fraction form
    18,468.84/27,716.22 = 14,318.40/x
  3. Step 3: Cross multiply
    18,468.84x = 27,716.22 × 14,318.40
  4. Step 4: Simplify right side
    18,468.84x = 396,851,924.45
  5. Step 5: Solve for x
    x = 396,851,924.45/18,468.84
  6. Step 6: Final answer
    x = 21,487.65

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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.