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Finding the Fourth Proportional to 21,614.60, 29,833.79 and 14,081.60

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Solution

The fourth proportional to 21,614.60, 29,833.79 and 14,081.60 is: 19,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.60 : 29,833.79 = 14,081.60 : x
  2. Step 2: Convert to fraction form
    21,614.60/29,833.79 = 14,081.60/x
  3. Step 3: Cross multiply
    21,614.60x = 29,833.79 × 14,081.60
  4. Step 4: Simplify right side
    21,614.60x = 420,107,277.69
  5. Step 5: Solve for x
    x = 420,107,277.69/21,614.60
  6. Step 6: Final answer
    x = 19,436.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.