Home / 20,841.40-28,761.78-11,410.84

Finding the Fourth Proportional to 20,841.40, 28,761.78 and 11,410.84

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Solution

The fourth proportional to 20,841.40, 28,761.78 and 11,410.84 is: 15,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.40 : 28,761.78 = 11,410.84 : x
  2. Step 2: Convert to fraction form
    20,841.40/28,761.78 = 11,410.84/x
  3. Step 3: Cross multiply
    20,841.40x = 28,761.78 × 11,410.84
  4. Step 4: Simplify right side
    20,841.40x = 328,196,069.70
  5. Step 5: Solve for x
    x = 328,196,069.70/20,841.40
  6. Step 6: Final answer
    x = 15,747.31

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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.