Home / 20,535.66-30,792.06-13,135.50

Finding the Fourth Proportional to 20,535.66, 30,792.06 and 13,135.50

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Solution

The fourth proportional to 20,535.66, 30,792.06 and 13,135.50 is: 19,695.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.66 : 30,792.06 = 13,135.50 : x
  2. Step 2: Convert to fraction form
    20,535.66/30,792.06 = 13,135.50/x
  3. Step 3: Cross multiply
    20,535.66x = 30,792.06 × 13,135.50
  4. Step 4: Simplify right side
    20,535.66x = 404,469,104.13
  5. Step 5: Solve for x
    x = 404,469,104.13/20,535.66
  6. Step 6: Final answer
    x = 19,695.94

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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.