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Finding the Fourth Proportional to 9,811.31, 13,544.64 and 7,568.15

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Solution

The fourth proportional to 9,811.31, 13,544.64 and 7,568.15 is: 10,447.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.31 : 13,544.64 = 7,568.15 : x
  2. Step 2: Convert to fraction form
    9,811.31/13,544.64 = 7,568.15/x
  3. Step 3: Cross multiply
    9,811.31x = 13,544.64 × 7,568.15
  4. Step 4: Simplify right side
    9,811.31x = 102,507,799.49
  5. Step 5: Solve for x
    x = 102,507,799.49/9,811.31
  6. Step 6: Final answer
    x = 10,447.93

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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.