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Finding the Fourth Proportional to 12,768.60, 17,620.62 and 7,462.36

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Solution

The fourth proportional to 12,768.60, 17,620.62 and 7,462.36 is: 10,298.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.60 : 17,620.62 = 7,462.36 : x
  2. Step 2: Convert to fraction form
    12,768.60/17,620.62 = 7,462.36/x
  3. Step 3: Cross multiply
    12,768.60x = 17,620.62 × 7,462.36
  4. Step 4: Simplify right side
    12,768.60x = 131,491,409.86
  5. Step 5: Solve for x
    x = 131,491,409.86/12,768.60
  6. Step 6: Final answer
    x = 10,298.03

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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.