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Finding the Fourth Proportional to 11,969.57, 16,516.71 and 6,664.28

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Solution

The fourth proportional to 11,969.57, 16,516.71 and 6,664.28 is: 9,195.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.57 : 16,516.71 = 6,664.28 : x
  2. Step 2: Convert to fraction form
    11,969.57/16,516.71 = 6,664.28/x
  3. Step 3: Cross multiply
    11,969.57x = 16,516.71 × 6,664.28
  4. Step 4: Simplify right side
    11,969.57x = 110,071,897.54
  5. Step 5: Solve for x
    x = 110,071,897.54/11,969.57
  6. Step 6: Final answer
    x = 9,195.98

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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.