Home / 20,841.17-28,760.81-11,409.73

Finding the Fourth Proportional to 20,841.17, 28,760.81 and 11,409.73

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Solution

The fourth proportional to 20,841.17, 28,760.81 and 11,409.73 is: 15,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.17 : 28,760.81 = 11,409.73 : x
  2. Step 2: Convert to fraction form
    20,841.17/28,760.81 = 11,409.73/x
  3. Step 3: Cross multiply
    20,841.17x = 28,760.81 × 11,409.73
  4. Step 4: Simplify right side
    20,841.17x = 328,152,947.73
  5. Step 5: Solve for x
    x = 328,152,947.73/20,841.17
  6. Step 6: Final answer
    x = 15,745.42

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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.