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Finding the Fourth Proportional to 18,843.66, 26,000.60 and 12,127.68

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Solution

The fourth proportional to 18,843.66, 26,000.60 and 12,127.68 is: 16,733.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.66 : 26,000.60 = 12,127.68 : x
  2. Step 2: Convert to fraction form
    18,843.66/26,000.60 = 12,127.68/x
  3. Step 3: Cross multiply
    18,843.66x = 26,000.60 × 12,127.68
  4. Step 4: Simplify right side
    18,843.66x = 315,326,895.97
  5. Step 5: Solve for x
    x = 315,326,895.97/18,843.66
  6. Step 6: Final answer
    x = 16,733.85

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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.