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Finding the Fourth Proportional to 15,012.74, 20,737.06 and 12,198.80

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Solution

The fourth proportional to 15,012.74, 20,737.06 and 12,198.80 is: 16,850.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.74 : 20,737.06 = 12,198.80 : x
  2. Step 2: Convert to fraction form
    15,012.74/20,737.06 = 12,198.80/x
  3. Step 3: Cross multiply
    15,012.74x = 20,737.06 × 12,198.80
  4. Step 4: Simplify right side
    15,012.74x = 252,967,247.53
  5. Step 5: Solve for x
    x = 252,967,247.53/15,012.74
  6. Step 6: Final answer
    x = 16,850.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.