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Finding the Fourth Proportional to 18,723.68, 25,843.10 and 10,770.50

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Solution

The fourth proportional to 18,723.68, 25,843.10 and 10,770.50 is: 14,865.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.68 : 25,843.10 = 10,770.50 : x
  2. Step 2: Convert to fraction form
    18,723.68/25,843.10 = 10,770.50/x
  3. Step 3: Cross multiply
    18,723.68x = 25,843.10 × 10,770.50
  4. Step 4: Simplify right side
    18,723.68x = 278,343,108.55
  5. Step 5: Solve for x
    x = 278,343,108.55/18,723.68
  6. Step 6: Final answer
    x = 14,865.83

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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.