Home / 20,226.78-30,332.31-8,382.49

Finding the Fourth Proportional to 20,226.78, 30,332.31 and 8,382.49

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Solution

The fourth proportional to 20,226.78, 30,332.31 and 8,382.49 is: 12,570.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.78 : 30,332.31 = 8,382.49 : x
  2. Step 2: Convert to fraction form
    20,226.78/30,332.31 = 8,382.49/x
  3. Step 3: Cross multiply
    20,226.78x = 30,332.31 × 8,382.49
  4. Step 4: Simplify right side
    20,226.78x = 254,260,177.99
  5. Step 5: Solve for x
    x = 254,260,177.99/20,226.78
  6. Step 6: Final answer
    x = 12,570.47

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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.