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Finding the Fourth Proportional to 17,220.39, 23,758.02 and 11,255.49

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Solution

The fourth proportional to 17,220.39, 23,758.02 and 11,255.49 is: 15,528.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.39 : 23,758.02 = 11,255.49 : x
  2. Step 2: Convert to fraction form
    17,220.39/23,758.02 = 11,255.49/x
  3. Step 3: Cross multiply
    17,220.39x = 23,758.02 × 11,255.49
  4. Step 4: Simplify right side
    17,220.39x = 267,408,156.53
  5. Step 5: Solve for x
    x = 267,408,156.53/17,220.39
  6. Step 6: Final answer
    x = 15,528.58

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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.