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Finding the Fourth Proportional to 8,689.27, 13,019.31 and 6,954.25

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Solution

The fourth proportional to 8,689.27, 13,019.31 and 6,954.25 is: 10,419.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.27 : 13,019.31 = 6,954.25 : x
  2. Step 2: Convert to fraction form
    8,689.27/13,019.31 = 6,954.25/x
  3. Step 3: Cross multiply
    8,689.27x = 13,019.31 × 6,954.25
  4. Step 4: Simplify right side
    8,689.27x = 90,539,536.57
  5. Step 5: Solve for x
    x = 90,539,536.57/8,689.27
  6. Step 6: Final answer
    x = 10,419.69

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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.