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Finding the Fourth Proportional to 13,614.97, 20,426.11 and 12,313.71

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Solution

The fourth proportional to 13,614.97, 20,426.11 and 12,313.71 is: 18,473.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.97 : 20,426.11 = 12,313.71 : x
  2. Step 2: Convert to fraction form
    13,614.97/20,426.11 = 12,313.71/x
  3. Step 3: Cross multiply
    13,614.97x = 20,426.11 × 12,313.71
  4. Step 4: Simplify right side
    13,614.97x = 251,521,194.97
  5. Step 5: Solve for x
    x = 251,521,194.97/13,614.97
  6. Step 6: Final answer
    x = 18,473.87

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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.