Home / 20,761.38-31,143.69-6,716.25

Finding the Fourth Proportional to 20,761.38, 31,143.69 and 6,716.25

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Solution

The fourth proportional to 20,761.38, 31,143.69 and 6,716.25 is: 10,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.38 : 31,143.69 = 6,716.25 : x
  2. Step 2: Convert to fraction form
    20,761.38/31,143.69 = 6,716.25/x
  3. Step 3: Cross multiply
    20,761.38x = 31,143.69 × 6,716.25
  4. Step 4: Simplify right side
    20,761.38x = 209,168,807.96
  5. Step 5: Solve for x
    x = 209,168,807.96/20,761.38
  6. Step 6: Final answer
    x = 10,074.90

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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.