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Finding the Fourth Proportional to 9,940.48, 14,889.64 and 6,805.78

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Solution

The fourth proportional to 9,940.48, 14,889.64 and 6,805.78 is: 10,194.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.48 : 14,889.64 = 6,805.78 : x
  2. Step 2: Convert to fraction form
    9,940.48/14,889.64 = 6,805.78/x
  3. Step 3: Cross multiply
    9,940.48x = 14,889.64 × 6,805.78
  4. Step 4: Simplify right side
    9,940.48x = 101,335,614.12
  5. Step 5: Solve for x
    x = 101,335,614.12/9,940.48
  6. Step 6: Final answer
    x = 10,194.24

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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.