Home / 20,212.54-30,290.19-15,211.58

Finding the Fourth Proportional to 20,212.54, 30,290.19 and 15,211.58

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Solution

The fourth proportional to 20,212.54, 30,290.19 and 15,211.58 is: 22,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.54 : 30,290.19 = 15,211.58 : x
  2. Step 2: Convert to fraction form
    20,212.54/30,290.19 = 15,211.58/x
  3. Step 3: Cross multiply
    20,212.54x = 30,290.19 × 15,211.58
  4. Step 4: Simplify right side
    20,212.54x = 460,761,648.40
  5. Step 5: Solve for x
    x = 460,761,648.40/20,212.54
  6. Step 6: Final answer
    x = 22,795.83

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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.