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Finding the Fourth Proportional to 12,568.56, 17,343.94 and 7,191.11

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Solution

The fourth proportional to 12,568.56, 17,343.94 and 7,191.11 is: 9,923.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,568.56 : 17,343.94 = 7,191.11 : x
  2. Step 2: Convert to fraction form
    12,568.56/17,343.94 = 7,191.11/x
  3. Step 3: Cross multiply
    12,568.56x = 17,343.94 × 7,191.11
  4. Step 4: Simplify right side
    12,568.56x = 124,722,102.64
  5. Step 5: Solve for x
    x = 124,722,102.64/12,568.56
  6. Step 6: Final answer
    x = 9,923.34

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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.