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Finding the Fourth Proportional to 21,662.44, 32,493.66 and 7,811.44

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Solution

The fourth proportional to 21,662.44, 32,493.66 and 7,811.44 is: 11,717.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,662.44 : 32,493.66 = 7,811.44 : x
  2. Step 2: Convert to fraction form
    21,662.44/32,493.66 = 7,811.44/x
  3. Step 3: Cross multiply
    21,662.44x = 32,493.66 × 7,811.44
  4. Step 4: Simplify right side
    21,662.44x = 253,822,164.94
  5. Step 5: Solve for x
    x = 253,822,164.94/21,662.44
  6. Step 6: Final answer
    x = 11,717.16

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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.