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Finding the Fourth Proportional to 10,961.82, 15,128.10 and 6,246.41

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Solution

The fourth proportional to 10,961.82, 15,128.10 and 6,246.41 is: 8,620.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.82 : 15,128.10 = 6,246.41 : x
  2. Step 2: Convert to fraction form
    10,961.82/15,128.10 = 6,246.41/x
  3. Step 3: Cross multiply
    10,961.82x = 15,128.10 × 6,246.41
  4. Step 4: Simplify right side
    10,961.82x = 94,496,239.48
  5. Step 5: Solve for x
    x = 94,496,239.48/10,961.82
  6. Step 6: Final answer
    x = 8,620.49

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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.