Home / 13,524.35-20,272.14-7,980.30

Finding the Fourth Proportional to 13,524.35, 20,272.14 and 7,980.30

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Solution

The fourth proportional to 13,524.35, 20,272.14 and 7,980.30 is: 11,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.35 : 20,272.14 = 7,980.30 : x
  2. Step 2: Convert to fraction form
    13,524.35/20,272.14 = 7,980.30/x
  3. Step 3: Cross multiply
    13,524.35x = 20,272.14 × 7,980.30
  4. Step 4: Simplify right side
    13,524.35x = 161,777,758.84
  5. Step 5: Solve for x
    x = 161,777,758.84/13,524.35
  6. Step 6: Final answer
    x = 11,961.97

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Double scale
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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.