Home / 20,722.22-31,110.42-12,304.09

Finding the Fourth Proportional to 20,722.22, 31,110.42 and 12,304.09

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Solution

The fourth proportional to 20,722.22, 31,110.42 and 12,304.09 is: 18,472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.22 : 31,110.42 = 12,304.09 : x
  2. Step 2: Convert to fraction form
    20,722.22/31,110.42 = 12,304.09/x
  3. Step 3: Cross multiply
    20,722.22x = 31,110.42 × 12,304.09
  4. Step 4: Simplify right side
    20,722.22x = 382,785,407.62
  5. Step 5: Solve for x
    x = 382,785,407.62/20,722.22
  6. Step 6: Final answer
    x = 18,472.22

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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.