Home / 15,344.92-21,175.78-8,630.54

Finding the Fourth Proportional to 15,344.92, 21,175.78 and 8,630.54

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Solution

The fourth proportional to 15,344.92, 21,175.78 and 8,630.54 is: 11,910.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.92 : 21,175.78 = 8,630.54 : x
  2. Step 2: Convert to fraction form
    15,344.92/21,175.78 = 8,630.54/x
  3. Step 3: Cross multiply
    15,344.92x = 21,175.78 × 8,630.54
  4. Step 4: Simplify right side
    15,344.92x = 182,758,515.71
  5. Step 5: Solve for x
    x = 182,758,515.71/15,344.92
  6. Step 6: Final answer
    x = 11,910.03

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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.