Home / 26,981.64-40,476.78-12,189.96

Finding the Fourth Proportional to 26,981.64, 40,476.78 and 12,189.96

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Solution

The fourth proportional to 26,981.64, 40,476.78 and 12,189.96 is: 18,286.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,981.64 : 40,476.78 = 12,189.96 : x
  2. Step 2: Convert to fraction form
    26,981.64/40,476.78 = 12,189.96/x
  3. Step 3: Cross multiply
    26,981.64x = 40,476.78 × 12,189.96
  4. Step 4: Simplify right side
    26,981.64x = 493,410,329.13
  5. Step 5: Solve for x
    x = 493,410,329.13/26,981.64
  6. Step 6: Final answer
    x = 18,286.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.