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Finding the Fourth Proportional to 18,876.63, 26,049.54 and 10,918.68

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Solution

The fourth proportional to 18,876.63, 26,049.54 and 10,918.68 is: 15,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.63 : 26,049.54 = 10,918.68 : x
  2. Step 2: Convert to fraction form
    18,876.63/26,049.54 = 10,918.68/x
  3. Step 3: Cross multiply
    18,876.63x = 26,049.54 × 10,918.68
  4. Step 4: Simplify right side
    18,876.63x = 284,426,591.41
  5. Step 5: Solve for x
    x = 284,426,591.41/18,876.63
  6. Step 6: Final answer
    x = 15,067.66

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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.