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Finding the Fourth Proportional to 21,755.70, 32,637.64 and 6,960.65

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Solution

The fourth proportional to 21,755.70, 32,637.64 and 6,960.65 is: 10,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,755.70 : 32,637.64 = 6,960.65 : x
  2. Step 2: Convert to fraction form
    21,755.70/32,637.64 = 6,960.65/x
  3. Step 3: Cross multiply
    21,755.70x = 32,637.64 × 6,960.65
  4. Step 4: Simplify right side
    21,755.70x = 227,179,188.87
  5. Step 5: Solve for x
    x = 227,179,188.87/21,755.70
  6. Step 6: Final answer
    x = 10,442.28

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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.