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Finding the Fourth Proportional to 21,912.58, 32,853.48 and 7,677.57

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Solution

The fourth proportional to 21,912.58, 32,853.48 and 7,677.57 is: 11,510.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.58 : 32,853.48 = 7,677.57 : x
  2. Step 2: Convert to fraction form
    21,912.58/32,853.48 = 7,677.57/x
  3. Step 3: Cross multiply
    21,912.58x = 32,853.48 × 7,677.57
  4. Step 4: Simplify right side
    21,912.58x = 252,234,892.44
  5. Step 5: Solve for x
    x = 252,234,892.44/21,912.58
  6. Step 6: Final answer
    x = 11,510.96

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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.