Home / 20,496.20-30,758.70-13,118.60

Finding the Fourth Proportional to 20,496.20, 30,758.70 and 13,118.60

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Solution

The fourth proportional to 20,496.20, 30,758.70 and 13,118.60 is: 19,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.20 : 30,758.70 = 13,118.60 : x
  2. Step 2: Convert to fraction form
    20,496.20/30,758.70 = 13,118.60/x
  3. Step 3: Cross multiply
    20,496.20x = 30,758.70 × 13,118.60
  4. Step 4: Simplify right side
    20,496.20x = 403,511,081.82
  5. Step 5: Solve for x
    x = 403,511,081.82/20,496.20
  6. Step 6: Final answer
    x = 19,687.12

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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.