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Finding the Fourth Proportional to 18,584.80, 27,880.32 and 9,225.28

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Solution

The fourth proportional to 18,584.80, 27,880.32 and 9,225.28 is: 13,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,584.80 : 27,880.32 = 9,225.28 : x
  2. Step 2: Convert to fraction form
    18,584.80/27,880.32 = 9,225.28/x
  3. Step 3: Cross multiply
    18,584.80x = 27,880.32 × 9,225.28
  4. Step 4: Simplify right side
    18,584.80x = 257,203,758.49
  5. Step 5: Solve for x
    x = 257,203,758.49/18,584.80
  6. Step 6: Final answer
    x = 13,839.47

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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.