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Finding the Fourth Proportional to 18,727, 25,843.38 and 10,343.80

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Solution

The fourth proportional to 18,727, 25,843.38 and 10,343.80 is: 14,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727 : 25,843.38 = 10,343.80 : x
  2. Step 2: Convert to fraction form
    18,727/25,843.38 = 10,343.80/x
  3. Step 3: Cross multiply
    18,727x = 25,843.38 × 10,343.80
  4. Step 4: Simplify right side
    18,727x = 267,318,754.04
  5. Step 5: Solve for x
    x = 267,318,754.04/18,727
  6. Step 6: Final answer
    x = 14,274.51

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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.