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Finding the Fourth Proportional to 12,662.37, 18,999.13 and 6,737.86

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Solution

The fourth proportional to 12,662.37, 18,999.13 and 6,737.86 is: 10,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.37 : 18,999.13 = 6,737.86 : x
  2. Step 2: Convert to fraction form
    12,662.37/18,999.13 = 6,737.86/x
  3. Step 3: Cross multiply
    12,662.37x = 18,999.13 × 6,737.86
  4. Step 4: Simplify right side
    12,662.37x = 128,013,532.46
  5. Step 5: Solve for x
    x = 128,013,532.46/12,662.37
  6. Step 6: Final answer
    x = 10,109.76

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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.