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Finding the Fourth Proportional to 18,855.63, 26,003.39 and 12,814.92

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Solution

The fourth proportional to 18,855.63, 26,003.39 and 12,814.92 is: 17,672.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.63 : 26,003.39 = 12,814.92 : x
  2. Step 2: Convert to fraction form
    18,855.63/26,003.39 = 12,814.92/x
  3. Step 3: Cross multiply
    18,855.63x = 26,003.39 × 12,814.92
  4. Step 4: Simplify right side
    18,855.63x = 333,231,298.50
  5. Step 5: Solve for x
    x = 333,231,298.50/18,855.63
  6. Step 6: Final answer
    x = 17,672.77

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Double scale
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Similar ratio
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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.