Home / 20,759.75-31,140.17-6,908.75

Finding the Fourth Proportional to 20,759.75, 31,140.17 and 6,908.75

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Solution

The fourth proportional to 20,759.75, 31,140.17 and 6,908.75 is: 10,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.75 : 31,140.17 = 6,908.75 : x
  2. Step 2: Convert to fraction form
    20,759.75/31,140.17 = 6,908.75/x
  3. Step 3: Cross multiply
    20,759.75x = 31,140.17 × 6,908.75
  4. Step 4: Simplify right side
    20,759.75x = 215,139,649.49
  5. Step 5: Solve for x
    x = 215,139,649.49/20,759.75
  6. Step 6: Final answer
    x = 10,363.31

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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.