Home / 20,841.35-28,761.06-11,409.92

Finding the Fourth Proportional to 20,841.35, 28,761.06 and 11,409.92

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Solution

The fourth proportional to 20,841.35, 28,761.06 and 11,409.92 is: 15,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.35 : 28,761.06 = 11,409.92 : x
  2. Step 2: Convert to fraction form
    20,841.35/28,761.06 = 11,409.92/x
  3. Step 3: Cross multiply
    20,841.35x = 28,761.06 × 11,409.92
  4. Step 4: Simplify right side
    20,841.35x = 328,161,249.91
  5. Step 5: Solve for x
    x = 328,161,249.91/20,841.35
  6. Step 6: Final answer
    x = 15,745.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.