Home / 20,249.61-30,347.91-10,878.68

Finding the Fourth Proportional to 20,249.61, 30,347.91 and 10,878.68

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Solution

The fourth proportional to 20,249.61, 30,347.91 and 10,878.68 is: 16,303.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.61 : 30,347.91 = 10,878.68 : x
  2. Step 2: Convert to fraction form
    20,249.61/30,347.91 = 10,878.68/x
  3. Step 3: Cross multiply
    20,249.61x = 30,347.91 × 10,878.68
  4. Step 4: Simplify right side
    20,249.61x = 330,145,201.56
  5. Step 5: Solve for x
    x = 330,145,201.56/20,249.61
  6. Step 6: Final answer
    x = 16,303.78

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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.