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Finding the Fourth Proportional to 18,790.88, 28,189.52 and 6,476

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Solution

The fourth proportional to 18,790.88, 28,189.52 and 6,476 is: 9,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.88 : 28,189.52 = 6,476 : x
  2. Step 2: Convert to fraction form
    18,790.88/28,189.52 = 6,476/x
  3. Step 3: Cross multiply
    18,790.88x = 28,189.52 × 6,476
  4. Step 4: Simplify right side
    18,790.88x = 182,555,331.52
  5. Step 5: Solve for x
    x = 182,555,331.52/18,790.88
  6. Step 6: Final answer
    x = 9,715.10

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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.