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Finding the Fourth Proportional to 18,708.66, 28,062.86 and 4,668.62

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Solution

The fourth proportional to 18,708.66, 28,062.86 and 4,668.62 is: 7,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.66 : 28,062.86 = 4,668.62 : x
  2. Step 2: Convert to fraction form
    18,708.66/28,062.86 = 4,668.62/x
  3. Step 3: Cross multiply
    18,708.66x = 28,062.86 × 4,668.62
  4. Step 4: Simplify right side
    18,708.66x = 131,014,829.45
  5. Step 5: Solve for x
    x = 131,014,829.45/18,708.66
  6. Step 6: Final answer
    x = 7,002.90

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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.