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Finding the Fourth Proportional to 19,149.54, 28,719.87 and 7,304.64

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Solution

The fourth proportional to 19,149.54, 28,719.87 and 7,304.64 is: 10,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.54 : 28,719.87 = 7,304.64 : x
  2. Step 2: Convert to fraction form
    19,149.54/28,719.87 = 7,304.64/x
  3. Step 3: Cross multiply
    19,149.54x = 28,719.87 × 7,304.64
  4. Step 4: Simplify right side
    19,149.54x = 209,788,311.20
  5. Step 5: Solve for x
    x = 209,788,311.20/19,149.54
  6. Step 6: Final answer
    x = 10,955.27

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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.