Home / 20,991.18-31,481.61-6,196.14

Finding the Fourth Proportional to 20,991.18, 31,481.61 and 6,196.14

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Solution

The fourth proportional to 20,991.18, 31,481.61 and 6,196.14 is: 9,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991.18 : 31,481.61 = 6,196.14 : x
  2. Step 2: Convert to fraction form
    20,991.18/31,481.61 = 6,196.14/x
  3. Step 3: Cross multiply
    20,991.18x = 31,481.61 × 6,196.14
  4. Step 4: Simplify right side
    20,991.18x = 195,064,462.99
  5. Step 5: Solve for x
    x = 195,064,462.99/20,991.18
  6. Step 6: Final answer
    x = 9,292.69

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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.