Home / 12,982.60-17,919.66-7,679.26

Finding the Fourth Proportional to 12,982.60, 17,919.66 and 7,679.26

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Solution

The fourth proportional to 12,982.60, 17,919.66 and 7,679.26 is: 10,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.60 : 17,919.66 = 7,679.26 : x
  2. Step 2: Convert to fraction form
    12,982.60/17,919.66 = 7,679.26/x
  3. Step 3: Cross multiply
    12,982.60x = 17,919.66 × 7,679.26
  4. Step 4: Simplify right side
    12,982.60x = 137,609,728.25
  5. Step 5: Solve for x
    x = 137,609,728.25/12,982.60
  6. Step 6: Final answer
    x = 10,599.55

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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.