Home / 20,735.19-31,103.19-5,152.82

Finding the Fourth Proportional to 20,735.19, 31,103.19 and 5,152.82

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Solution

The fourth proportional to 20,735.19, 31,103.19 and 5,152.82 is: 7,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.19 : 31,103.19 = 5,152.82 : x
  2. Step 2: Convert to fraction form
    20,735.19/31,103.19 = 5,152.82/x
  3. Step 3: Cross multiply
    20,735.19x = 31,103.19 × 5,152.82
  4. Step 4: Simplify right side
    20,735.19x = 160,268,983.98
  5. Step 5: Solve for x
    x = 160,268,983.98/20,735.19
  6. Step 6: Final answer
    x = 7,729.32

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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.