Home / 20,218.08-30,344.16-8,539.68

Finding the Fourth Proportional to 20,218.08, 30,344.16 and 8,539.68

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Solution

The fourth proportional to 20,218.08, 30,344.16 and 8,539.68 is: 12,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.08 : 30,344.16 = 8,539.68 : x
  2. Step 2: Convert to fraction form
    20,218.08/30,344.16 = 8,539.68/x
  3. Step 3: Cross multiply
    20,218.08x = 30,344.16 × 8,539.68
  4. Step 4: Simplify right side
    20,218.08x = 259,129,416.27
  5. Step 5: Solve for x
    x = 259,129,416.27/20,218.08
  6. Step 6: Final answer
    x = 12,816.72

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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.