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Finding the Fourth Proportional to 20,440.66, 30,672.82 and 8,593.50

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Solution

The fourth proportional to 20,440.66, 30,672.82 and 8,593.50 is: 12,895.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.66 : 30,672.82 = 8,593.50 : x
  2. Step 2: Convert to fraction form
    20,440.66/30,672.82 = 8,593.50/x
  3. Step 3: Cross multiply
    20,440.66x = 30,672.82 × 8,593.50
  4. Step 4: Simplify right side
    20,440.66x = 263,586,878.67
  5. Step 5: Solve for x
    x = 263,586,878.67/20,440.66
  6. Step 6: Final answer
    x = 12,895.22

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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.