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Finding the Fourth Proportional to 22,000.61, 32,991.10 and 7,960.07

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Solution

The fourth proportional to 22,000.61, 32,991.10 and 7,960.07 is: 11,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,000.61 : 32,991.10 = 7,960.07 : x
  2. Step 2: Convert to fraction form
    22,000.61/32,991.10 = 7,960.07/x
  3. Step 3: Cross multiply
    22,000.61x = 32,991.10 × 7,960.07
  4. Step 4: Simplify right side
    22,000.61x = 262,611,527.95
  5. Step 5: Solve for x
    x = 262,611,527.95/22,000.61
  6. Step 6: Final answer
    x = 11,936.56

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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.