Home / 20,450.33-28,220.72-11,498.34

Finding the Fourth Proportional to 20,450.33, 28,220.72 and 11,498.34

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Solution

The fourth proportional to 20,450.33, 28,220.72 and 11,498.34 is: 15,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.33 : 28,220.72 = 11,498.34 : x
  2. Step 2: Convert to fraction form
    20,450.33/28,220.72 = 11,498.34/x
  3. Step 3: Cross multiply
    20,450.33x = 28,220.72 × 11,498.34
  4. Step 4: Simplify right side
    20,450.33x = 324,491,462.35
  5. Step 5: Solve for x
    x = 324,491,462.35/20,450.33
  6. Step 6: Final answer
    x = 15,867.30

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.