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Finding the Fourth Proportional to 11,663.46, 17,491.98 and 6,979.78

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Solution

The fourth proportional to 11,663.46, 17,491.98 and 6,979.78 is: 10,467.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,663.46 : 17,491.98 = 6,979.78 : x
  2. Step 2: Convert to fraction form
    11,663.46/17,491.98 = 6,979.78/x
  3. Step 3: Cross multiply
    11,663.46x = 17,491.98 × 6,979.78
  4. Step 4: Simplify right side
    11,663.46x = 122,090,172.16
  5. Step 5: Solve for x
    x = 122,090,172.16/11,663.46
  6. Step 6: Final answer
    x = 10,467.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.