Home / 20,226.32-30,339.18-12,331.16

Finding the Fourth Proportional to 20,226.32, 30,339.18 and 12,331.16

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Solution

The fourth proportional to 20,226.32, 30,339.18 and 12,331.16 is: 18,496.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.32 : 30,339.18 = 12,331.16 : x
  2. Step 2: Convert to fraction form
    20,226.32/30,339.18 = 12,331.16/x
  3. Step 3: Cross multiply
    20,226.32x = 30,339.18 × 12,331.16
  4. Step 4: Simplify right side
    20,226.32x = 374,117,282.85
  5. Step 5: Solve for x
    x = 374,117,282.85/20,226.32
  6. Step 6: Final answer
    x = 18,496.56

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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.