Home / 15,414.36-21,249.18-11,108.76

Finding the Fourth Proportional to 15,414.36, 21,249.18 and 11,108.76

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Solution

The fourth proportional to 15,414.36, 21,249.18 and 11,108.76 is: 15,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.36 : 21,249.18 = 11,108.76 : x
  2. Step 2: Convert to fraction form
    15,414.36/21,249.18 = 11,108.76/x
  3. Step 3: Cross multiply
    15,414.36x = 21,249.18 × 11,108.76
  4. Step 4: Simplify right side
    15,414.36x = 236,052,040.82
  5. Step 5: Solve for x
    x = 236,052,040.82/15,414.36
  6. Step 6: Final answer
    x = 15,313.78

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Half scale
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Double scale
Find fourth proportional to 15,415.36, 21,250.56 and 11,109.76
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.