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Finding the Fourth Proportional to 9,911.88, 14,889.60 and 6,806.28

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Solution

The fourth proportional to 9,911.88, 14,889.60 and 6,806.28 is: 10,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.88 : 14,889.60 = 6,806.28 : x
  2. Step 2: Convert to fraction form
    9,911.88/14,889.60 = 6,806.28/x
  3. Step 3: Cross multiply
    9,911.88x = 14,889.60 × 6,806.28
  4. Step 4: Simplify right side
    9,911.88x = 101,342,786.69
  5. Step 5: Solve for x
    x = 101,342,786.69/9,911.88
  6. Step 6: Final answer
    x = 10,224.38

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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.