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Finding the Fourth Proportional to 12,442.73, 18,620.24 and 7,764.94

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Solution

The fourth proportional to 12,442.73, 18,620.24 and 7,764.94 is: 11,620.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.73 : 18,620.24 = 7,764.94 : x
  2. Step 2: Convert to fraction form
    12,442.73/18,620.24 = 7,764.94/x
  3. Step 3: Cross multiply
    12,442.73x = 18,620.24 × 7,764.94
  4. Step 4: Simplify right side
    12,442.73x = 144,584,914.46
  5. Step 5: Solve for x
    x = 144,584,914.46/12,442.73
  6. Step 6: Final answer
    x = 11,620.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.