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Finding the Fourth Proportional to 11,431.14, 15,766.08 and 7,653.11

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Solution

The fourth proportional to 11,431.14, 15,766.08 and 7,653.11 is: 10,555.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.14 : 15,766.08 = 7,653.11 : x
  2. Step 2: Convert to fraction form
    11,431.14/15,766.08 = 7,653.11/x
  3. Step 3: Cross multiply
    11,431.14x = 15,766.08 × 7,653.11
  4. Step 4: Simplify right side
    11,431.14x = 120,659,465.68
  5. Step 5: Solve for x
    x = 120,659,465.68/11,431.14
  6. Step 6: Final answer
    x = 10,555.33

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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.