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Finding the Fourth Proportional to 21,641.12, 32,469.44 and 8,502.44

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Solution

The fourth proportional to 21,641.12, 32,469.44 and 8,502.44 is: 12,756.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.12 : 32,469.44 = 8,502.44 : x
  2. Step 2: Convert to fraction form
    21,641.12/32,469.44 = 8,502.44/x
  3. Step 3: Cross multiply
    21,641.12x = 32,469.44 × 8,502.44
  4. Step 4: Simplify right side
    21,641.12x = 276,069,465.43
  5. Step 5: Solve for x
    x = 276,069,465.43/21,641.12
  6. Step 6: Final answer
    x = 12,756.71

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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.