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Finding the Fourth Proportional to 18,473.76, 27,731.70 and 14,020.38

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Solution

The fourth proportional to 18,473.76, 27,731.70 and 14,020.38 is: 21,046.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.76 : 27,731.70 = 14,020.38 : x
  2. Step 2: Convert to fraction form
    18,473.76/27,731.70 = 14,020.38/x
  3. Step 3: Cross multiply
    18,473.76x = 27,731.70 × 14,020.38
  4. Step 4: Simplify right side
    18,473.76x = 388,808,972.05
  5. Step 5: Solve for x
    x = 388,808,972.05/18,473.76
  6. Step 6: Final answer
    x = 21,046.55

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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.