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Finding the Fourth Proportional to 12,662, 18,980.04 and 6,410.42

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Solution

The fourth proportional to 12,662, 18,980.04 and 6,410.42 is: 9,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662 : 18,980.04 = 6,410.42 : x
  2. Step 2: Convert to fraction form
    12,662/18,980.04 = 6,410.42/x
  3. Step 3: Cross multiply
    12,662x = 18,980.04 × 6,410.42
  4. Step 4: Simplify right side
    12,662x = 121,670,028.02
  5. Step 5: Solve for x
    x = 121,670,028.02/12,662
  6. Step 6: Final answer
    x = 9,609.07

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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.