Home / 20,911.44-31,360.53-6,869.16

Finding the Fourth Proportional to 20,911.44, 31,360.53 and 6,869.16

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Solution

The fourth proportional to 20,911.44, 31,360.53 and 6,869.16 is: 10,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.44 : 31,360.53 = 6,869.16 : x
  2. Step 2: Convert to fraction form
    20,911.44/31,360.53 = 6,869.16/x
  3. Step 3: Cross multiply
    20,911.44x = 31,360.53 × 6,869.16
  4. Step 4: Simplify right side
    20,911.44x = 215,420,498.25
  5. Step 5: Solve for x
    x = 215,420,498.25/20,911.44
  6. Step 6: Final answer
    x = 10,301.56

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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.