Home / 20,716.62-31,047.15-11,342.52

Finding the Fourth Proportional to 20,716.62, 31,047.15 and 11,342.52

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Solution

The fourth proportional to 20,716.62, 31,047.15 and 11,342.52 is: 16,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.62 : 31,047.15 = 11,342.52 : x
  2. Step 2: Convert to fraction form
    20,716.62/31,047.15 = 11,342.52/x
  3. Step 3: Cross multiply
    20,716.62x = 31,047.15 × 11,342.52
  4. Step 4: Simplify right side
    20,716.62x = 352,152,919.82
  5. Step 5: Solve for x
    x = 352,152,919.82/20,716.62
  6. Step 6: Final answer
    x = 16,998.57

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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.