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Finding the Fourth Proportional to 11,968, 16,516.22 and 7,490.32

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Solution

The fourth proportional to 11,968, 16,516.22 and 7,490.32 is: 10,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,968 : 16,516.22 = 7,490.32 : x
  2. Step 2: Convert to fraction form
    11,968/16,516.22 = 7,490.32/x
  3. Step 3: Cross multiply
    11,968x = 16,516.22 × 7,490.32
  4. Step 4: Simplify right side
    11,968x = 123,711,772.99
  5. Step 5: Solve for x
    x = 123,711,772.99/11,968
  6. Step 6: Final answer
    x = 10,336.88

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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.