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Finding the Fourth Proportional to 18,229.72, 27,244.68 and 13,309.72

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Solution

The fourth proportional to 18,229.72, 27,244.68 and 13,309.72 is: 19,891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,229.72 : 27,244.68 = 13,309.72 : x
  2. Step 2: Convert to fraction form
    18,229.72/27,244.68 = 13,309.72/x
  3. Step 3: Cross multiply
    18,229.72x = 27,244.68 × 13,309.72
  4. Step 4: Simplify right side
    18,229.72x = 362,619,062.29
  5. Step 5: Solve for x
    x = 362,619,062.29/18,229.72
  6. Step 6: Final answer
    x = 19,891.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.