Home / 12,255.43-16,915.97-7,222.57

Finding the Fourth Proportional to 12,255.43, 16,915.97 and 7,222.57

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Solution

The fourth proportional to 12,255.43, 16,915.97 and 7,222.57 is: 9,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.43 : 16,915.97 = 7,222.57 : x
  2. Step 2: Convert to fraction form
    12,255.43/16,915.97 = 7,222.57/x
  3. Step 3: Cross multiply
    12,255.43x = 16,915.97 × 7,222.57
  4. Step 4: Simplify right side
    12,255.43x = 122,176,777.44
  5. Step 5: Solve for x
    x = 122,176,777.44/12,255.43
  6. Step 6: Final answer
    x = 9,969.20

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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.