Home / 20,226.78-30,331.26-10,863.99

Finding the Fourth Proportional to 20,226.78, 30,331.26 and 10,863.99

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Solution

The fourth proportional to 20,226.78, 30,331.26 and 10,863.99 is: 16,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.78 : 30,331.26 = 10,863.99 : x
  2. Step 2: Convert to fraction form
    20,226.78/30,331.26 = 10,863.99/x
  3. Step 3: Cross multiply
    20,226.78x = 30,331.26 × 10,863.99
  4. Step 4: Simplify right side
    20,226.78x = 329,518,505.33
  5. Step 5: Solve for x
    x = 329,518,505.33/20,226.78
  6. Step 6: Final answer
    x = 16,291.20

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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.