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Finding the Fourth Proportional to 18,893.52, 28,340.10 and 11,500.02

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Solution

The fourth proportional to 18,893.52, 28,340.10 and 11,500.02 is: 17,249.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.52 : 28,340.10 = 11,500.02 : x
  2. Step 2: Convert to fraction form
    18,893.52/28,340.10 = 11,500.02/x
  3. Step 3: Cross multiply
    18,893.52x = 28,340.10 × 11,500.02
  4. Step 4: Simplify right side
    18,893.52x = 325,911,716.80
  5. Step 5: Solve for x
    x = 325,911,716.80/18,893.52
  6. Step 6: Final answer
    x = 17,249.92

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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.