Home / 18,217.78-27,326.70-5,905.78

Finding the Fourth Proportional to 18,217.78, 27,326.70 and 5,905.78

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Solution

The fourth proportional to 18,217.78, 27,326.70 and 5,905.78 is: 8,858.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.78 : 27,326.70 = 5,905.78 : x
  2. Step 2: Convert to fraction form
    18,217.78/27,326.70 = 5,905.78/x
  3. Step 3: Cross multiply
    18,217.78x = 27,326.70 × 5,905.78
  4. Step 4: Simplify right side
    18,217.78x = 161,385,478.33
  5. Step 5: Solve for x
    x = 161,385,478.33/18,217.78
  6. Step 6: Final answer
    x = 8,858.68

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1.5x scale

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.