Home / 27,105.21-40,641.75-8,379.70

Finding the Fourth Proportional to 27,105.21, 40,641.75 and 8,379.70

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Solution

The fourth proportional to 27,105.21, 40,641.75 and 8,379.70 is: 12,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,105.21 : 40,641.75 = 8,379.70 : x
  2. Step 2: Convert to fraction form
    27,105.21/40,641.75 = 8,379.70/x
  3. Step 3: Cross multiply
    27,105.21x = 40,641.75 × 8,379.70
  4. Step 4: Simplify right side
    27,105.21x = 340,565,799.48
  5. Step 5: Solve for x
    x = 340,565,799.48/27,105.21
  6. Step 6: Final answer
    x = 12,564.59

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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.