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Finding the Fourth Proportional to 12,273.50, 18,393.09 and 6,639.01

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Solution

The fourth proportional to 12,273.50, 18,393.09 and 6,639.01 is: 9,949.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,273.50 : 18,393.09 = 6,639.01 : x
  2. Step 2: Convert to fraction form
    12,273.50/18,393.09 = 6,639.01/x
  3. Step 3: Cross multiply
    12,273.50x = 18,393.09 × 6,639.01
  4. Step 4: Simplify right side
    12,273.50x = 122,111,900.77
  5. Step 5: Solve for x
    x = 122,111,900.77/12,273.50
  6. Step 6: Final answer
    x = 9,949.23

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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.