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Finding the Fourth Proportional to 12,662.50, 18,999.32 and 6,737.99

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Solution

The fourth proportional to 12,662.50, 18,999.32 and 6,737.99 is: 10,109.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.50 : 18,999.32 = 6,737.99 : x
  2. Step 2: Convert to fraction form
    12,662.50/18,999.32 = 6,737.99/x
  3. Step 3: Cross multiply
    12,662.50x = 18,999.32 × 6,737.99
  4. Step 4: Simplify right side
    12,662.50x = 128,017,170.73
  5. Step 5: Solve for x
    x = 128,017,170.73/12,662.50
  6. Step 6: Final answer
    x = 10,109.95

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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.