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Finding the Fourth Proportional to 12,223.56, 16,868.34 and 7,442.40

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Solution

The fourth proportional to 12,223.56, 16,868.34 and 7,442.40 is: 10,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.56 : 16,868.34 = 7,442.40 : x
  2. Step 2: Convert to fraction form
    12,223.56/16,868.34 = 7,442.40/x
  3. Step 3: Cross multiply
    12,223.56x = 16,868.34 × 7,442.40
  4. Step 4: Simplify right side
    12,223.56x = 125,540,933.62
  5. Step 5: Solve for x
    x = 125,540,933.62/12,223.56
  6. Step 6: Final answer
    x = 10,270.41

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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.