Home / 15,511.37-21,406.14-8,796.83

Finding the Fourth Proportional to 15,511.37, 21,406.14 and 8,796.83

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Solution

The fourth proportional to 15,511.37, 21,406.14 and 8,796.83 is: 12,139.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.37 : 21,406.14 = 8,796.83 : x
  2. Step 2: Convert to fraction form
    15,511.37/21,406.14 = 8,796.83/x
  3. Step 3: Cross multiply
    15,511.37x = 21,406.14 × 8,796.83
  4. Step 4: Simplify right side
    15,511.37x = 188,306,067.51
  5. Step 5: Solve for x
    x = 188,306,067.51/15,511.37
  6. Step 6: Final answer
    x = 12,139.88

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Similar ratio
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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.