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Finding the Fourth Proportional to 18,774.68, 25,908.64 and 10,276.78

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Solution

The fourth proportional to 18,774.68, 25,908.64 and 10,276.78 is: 14,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.68 : 25,908.64 = 10,276.78 : x
  2. Step 2: Convert to fraction form
    18,774.68/25,908.64 = 10,276.78/x
  3. Step 3: Cross multiply
    18,774.68x = 25,908.64 × 10,276.78
  4. Step 4: Simplify right side
    18,774.68x = 266,257,393.38
  5. Step 5: Solve for x
    x = 266,257,393.38/18,774.68
  6. Step 6: Final answer
    x = 14,181.73

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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.