Home / 20,841.13-28,760.70-11,409.63

Finding the Fourth Proportional to 20,841.13, 28,760.70 and 11,409.63

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Solution

The fourth proportional to 20,841.13, 28,760.70 and 11,409.63 is: 15,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.13 : 28,760.70 = 11,409.63 : x
  2. Step 2: Convert to fraction form
    20,841.13/28,760.70 = 11,409.63/x
  3. Step 3: Cross multiply
    20,841.13x = 28,760.70 × 11,409.63
  4. Step 4: Simplify right side
    20,841.13x = 328,148,945.54
  5. Step 5: Solve for x
    x = 328,148,945.54/20,841.13
  6. Step 6: Final answer
    x = 15,745.26

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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.