Home / 20,219.08-30,345.66-8,540.68

Finding the Fourth Proportional to 20,219.08, 30,345.66 and 8,540.68

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Solution

The fourth proportional to 20,219.08, 30,345.66 and 8,540.68 is: 12,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.08 : 30,345.66 = 8,540.68 : x
  2. Step 2: Convert to fraction form
    20,219.08/30,345.66 = 8,540.68/x
  3. Step 3: Cross multiply
    20,219.08x = 30,345.66 × 8,540.68
  4. Step 4: Simplify right side
    20,219.08x = 259,172,571.45
  5. Step 5: Solve for x
    x = 259,172,571.45/20,219.08
  6. Step 6: Final answer
    x = 12,818.22

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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.