Home / 13,665.38-20,487.06-5,879.66

Finding the Fourth Proportional to 13,665.38, 20,487.06 and 5,879.66

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Solution

The fourth proportional to 13,665.38, 20,487.06 and 5,879.66 is: 8,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.38 : 20,487.06 = 5,879.66 : x
  2. Step 2: Convert to fraction form
    13,665.38/20,487.06 = 5,879.66/x
  3. Step 3: Cross multiply
    13,665.38x = 20,487.06 × 5,879.66
  4. Step 4: Simplify right side
    13,665.38x = 120,456,844.76
  5. Step 5: Solve for x
    x = 120,456,844.76/13,665.38
  6. Step 6: Final answer
    x = 8,814.75

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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.