Home / 20,328.22-30,470.46-13,286.08

Finding the Fourth Proportional to 20,328.22, 30,470.46 and 13,286.08

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Solution

The fourth proportional to 20,328.22, 30,470.46 and 13,286.08 is: 19,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.22 : 30,470.46 = 13,286.08 : x
  2. Step 2: Convert to fraction form
    20,328.22/30,470.46 = 13,286.08/x
  3. Step 3: Cross multiply
    20,328.22x = 30,470.46 × 13,286.08
  4. Step 4: Simplify right side
    20,328.22x = 404,832,969.20
  5. Step 5: Solve for x
    x = 404,832,969.20/20,328.22
  6. Step 6: Final answer
    x = 19,914.83

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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.