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Finding the Fourth Proportional to 21,995.78, 32,968.92 and 10,910.43

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Solution

The fourth proportional to 21,995.78, 32,968.92 and 10,910.43 is: 16,353.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.78 : 32,968.92 = 10,910.43 : x
  2. Step 2: Convert to fraction form
    21,995.78/32,968.92 = 10,910.43/x
  3. Step 3: Cross multiply
    21,995.78x = 32,968.92 × 10,910.43
  4. Step 4: Simplify right side
    21,995.78x = 359,705,093.84
  5. Step 5: Solve for x
    x = 359,705,093.84/21,995.78
  6. Step 6: Final answer
    x = 16,353.37

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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.