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Finding the Fourth Proportional to 21,906.99, 32,870.21 and 8,052.75

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Solution

The fourth proportional to 21,906.99, 32,870.21 and 8,052.75 is: 12,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.99 : 32,870.21 = 8,052.75 : x
  2. Step 2: Convert to fraction form
    21,906.99/32,870.21 = 8,052.75/x
  3. Step 3: Cross multiply
    21,906.99x = 32,870.21 × 8,052.75
  4. Step 4: Simplify right side
    21,906.99x = 264,695,543.31
  5. Step 5: Solve for x
    x = 264,695,543.31/21,906.99
  6. Step 6: Final answer
    x = 12,082.70

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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.