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Finding the Fourth Proportional to 9,911.98, 13,673.42 and 6,724.20

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Solution

The fourth proportional to 9,911.98, 13,673.42 and 6,724.20 is: 9,275.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.98 : 13,673.42 = 6,724.20 : x
  2. Step 2: Convert to fraction form
    9,911.98/13,673.42 = 6,724.20/x
  3. Step 3: Cross multiply
    9,911.98x = 13,673.42 × 6,724.20
  4. Step 4: Simplify right side
    9,911.98x = 91,942,810.76
  5. Step 5: Solve for x
    x = 91,942,810.76/9,911.98
  6. Step 6: Final answer
    x = 9,275.93

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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.