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Finding the Fourth Proportional to 18,668.96, 28,003.08 and 4,629.03

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Solution

The fourth proportional to 18,668.96, 28,003.08 and 4,629.03 is: 6,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.96 : 28,003.08 = 4,629.03 : x
  2. Step 2: Convert to fraction form
    18,668.96/28,003.08 = 4,629.03/x
  3. Step 3: Cross multiply
    18,668.96x = 28,003.08 × 4,629.03
  4. Step 4: Simplify right side
    18,668.96x = 129,627,009.76
  5. Step 5: Solve for x
    x = 129,627,009.76/18,668.96
  6. Step 6: Final answer
    x = 6,943.45

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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.