Home / 15,344.27-21,175.70-8,629.86

Finding the Fourth Proportional to 15,344.27, 21,175.70 and 8,629.86

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Solution

The fourth proportional to 15,344.27, 21,175.70 and 8,629.86 is: 11,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.27 : 21,175.70 = 8,629.86 : x
  2. Step 2: Convert to fraction form
    15,344.27/21,175.70 = 8,629.86/x
  3. Step 3: Cross multiply
    15,344.27x = 21,175.70 × 8,629.86
  4. Step 4: Simplify right side
    15,344.27x = 182,743,283.25
  5. Step 5: Solve for x
    x = 182,743,283.25/15,344.27
  6. Step 6: Final answer
    x = 11,909.55

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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.