Home / 20,249.35-30,387.58-8,403.13

Finding the Fourth Proportional to 20,249.35, 30,387.58 and 8,403.13

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Solution

The fourth proportional to 20,249.35, 30,387.58 and 8,403.13 is: 12,610.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.35 : 30,387.58 = 8,403.13 : x
  2. Step 2: Convert to fraction form
    20,249.35/30,387.58 = 8,403.13/x
  3. Step 3: Cross multiply
    20,249.35x = 30,387.58 × 8,403.13
  4. Step 4: Simplify right side
    20,249.35x = 255,350,835.29
  5. Step 5: Solve for x
    x = 255,350,835.29/20,249.35
  6. Step 6: Final answer
    x = 12,610.32

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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.