Home / 20,759.35-31,143.97-6,719.38

Finding the Fourth Proportional to 20,759.35, 31,143.97 and 6,719.38

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Solution

The fourth proportional to 20,759.35, 31,143.97 and 6,719.38 is: 10,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.35 : 31,143.97 = 6,719.38 : x
  2. Step 2: Convert to fraction form
    20,759.35/31,143.97 = 6,719.38/x
  3. Step 3: Cross multiply
    20,759.35x = 31,143.97 × 6,719.38
  4. Step 4: Simplify right side
    20,759.35x = 209,268,263.80
  5. Step 5: Solve for x
    x = 209,268,263.80/20,759.35
  6. Step 6: Final answer
    x = 10,080.67

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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.