Home / 20,896.48-31,344.87-6,115.70

Finding the Fourth Proportional to 20,896.48, 31,344.87 and 6,115.70

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Solution

The fourth proportional to 20,896.48, 31,344.87 and 6,115.70 is: 9,173.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.48 : 31,344.87 = 6,115.70 : x
  2. Step 2: Convert to fraction form
    20,896.48/31,344.87 = 6,115.70/x
  3. Step 3: Cross multiply
    20,896.48x = 31,344.87 × 6,115.70
  4. Step 4: Simplify right side
    20,896.48x = 191,695,821.46
  5. Step 5: Solve for x
    x = 191,695,821.46/20,896.48
  6. Step 6: Final answer
    x = 9,173.59

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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.