Home / 20,309.12-30,464.32-5,517.98

Finding the Fourth Proportional to 20,309.12, 30,464.32 and 5,517.98

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Solution

The fourth proportional to 20,309.12, 30,464.32 and 5,517.98 is: 8,277.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.12 : 30,464.32 = 5,517.98 : x
  2. Step 2: Convert to fraction form
    20,309.12/30,464.32 = 5,517.98/x
  3. Step 3: Cross multiply
    20,309.12x = 30,464.32 × 5,517.98
  4. Step 4: Simplify right side
    20,309.12x = 168,101,508.47
  5. Step 5: Solve for x
    x = 168,101,508.47/20,309.12
  6. Step 6: Final answer
    x = 8,277.14

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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.