Home / 20,695.50-31,049.38-11,936.70

Finding the Fourth Proportional to 20,695.50, 31,049.38 and 11,936.70

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Solution

The fourth proportional to 20,695.50, 31,049.38 and 11,936.70 is: 17,908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.50 : 31,049.38 = 11,936.70 : x
  2. Step 2: Convert to fraction form
    20,695.50/31,049.38 = 11,936.70/x
  3. Step 3: Cross multiply
    20,695.50x = 31,049.38 × 11,936.70
  4. Step 4: Simplify right side
    20,695.50x = 370,627,134.25
  5. Step 5: Solve for x
    x = 370,627,134.25/20,695.50
  6. Step 6: Final answer
    x = 17,908.59

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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.