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Finding the Fourth Proportional to 12,060.60, 18,077 and 4,661.80

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Solution

The fourth proportional to 12,060.60, 18,077 and 4,661.80 is: 6,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,060.60 : 18,077 = 4,661.80 : x
  2. Step 2: Convert to fraction form
    12,060.60/18,077 = 4,661.80/x
  3. Step 3: Cross multiply
    12,060.60x = 18,077 × 4,661.80
  4. Step 4: Simplify right side
    12,060.60x = 84,271,358.60
  5. Step 5: Solve for x
    x = 84,271,358.60/12,060.60
  6. Step 6: Final answer
    x = 6,987.33

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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.