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Finding the Fourth Proportional to 18,710.82, 25,819.08 and 10,326.78

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Solution

The fourth proportional to 18,710.82, 25,819.08 and 10,326.78 is: 14,249.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.82 : 25,819.08 = 10,326.78 : x
  2. Step 2: Convert to fraction form
    18,710.82/25,819.08 = 10,326.78/x
  3. Step 3: Cross multiply
    18,710.82x = 25,819.08 × 10,326.78
  4. Step 4: Simplify right side
    18,710.82x = 266,627,958.96
  5. Step 5: Solve for x
    x = 266,627,958.96/18,710.82
  6. Step 6: Final answer
    x = 14,249.93

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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.