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Finding the Fourth Proportional to 18,744.77, 28,131 and 8,884.08

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Solution

The fourth proportional to 18,744.77, 28,131 and 8,884.08 is: 13,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.77 : 28,131 = 8,884.08 : x
  2. Step 2: Convert to fraction form
    18,744.77/28,131 = 8,884.08/x
  3. Step 3: Cross multiply
    18,744.77x = 28,131 × 8,884.08
  4. Step 4: Simplify right side
    18,744.77x = 249,918,054.48
  5. Step 5: Solve for x
    x = 249,918,054.48/18,744.77
  6. Step 6: Final answer
    x = 13,332.68

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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.