Home / 11,549.78-15,944.82-8,891.36

Finding the Fourth Proportional to 11,549.78, 15,944.82 and 8,891.36

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Solution

The fourth proportional to 11,549.78, 15,944.82 and 8,891.36 is: 12,274.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,549.78 : 15,944.82 = 8,891.36 : x
  2. Step 2: Convert to fraction form
    11,549.78/15,944.82 = 8,891.36/x
  3. Step 3: Cross multiply
    11,549.78x = 15,944.82 × 8,891.36
  4. Step 4: Simplify right side
    11,549.78x = 141,771,134.76
  5. Step 5: Solve for x
    x = 141,771,134.76/11,549.78
  6. Step 6: Final answer
    x = 12,274.79

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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.