Home / 20,758.32-31,133.04-6,719.64

Finding the Fourth Proportional to 20,758.32, 31,133.04 and 6,719.64

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Solution

The fourth proportional to 20,758.32, 31,133.04 and 6,719.64 is: 10,078.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.32 : 31,133.04 = 6,719.64 : x
  2. Step 2: Convert to fraction form
    20,758.32/31,133.04 = 6,719.64/x
  3. Step 3: Cross multiply
    20,758.32x = 31,133.04 × 6,719.64
  4. Step 4: Simplify right side
    20,758.32x = 209,202,820.91
  5. Step 5: Solve for x
    x = 209,202,820.91/20,758.32
  6. Step 6: Final answer
    x = 10,078.02

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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.