Home / 20,736.26-31,104.12-5,153.78

Finding the Fourth Proportional to 20,736.26, 31,104.12 and 5,153.78

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Solution

The fourth proportional to 20,736.26, 31,104.12 and 5,153.78 is: 7,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.26 : 31,104.12 = 5,153.78 : x
  2. Step 2: Convert to fraction form
    20,736.26/31,104.12 = 5,153.78/x
  3. Step 3: Cross multiply
    20,736.26x = 31,104.12 × 5,153.78
  4. Step 4: Simplify right side
    20,736.26x = 160,303,791.57
  5. Step 5: Solve for x
    x = 160,303,791.57/20,736.26
  6. Step 6: Final answer
    x = 7,730.60

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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.