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Finding the Fourth Proportional to 19,171.19, 28,747.06 and 8,774.03

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Solution

The fourth proportional to 19,171.19, 28,747.06 and 8,774.03 is: 13,156.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.19 : 28,747.06 = 8,774.03 : x
  2. Step 2: Convert to fraction form
    19,171.19/28,747.06 = 8,774.03/x
  3. Step 3: Cross multiply
    19,171.19x = 28,747.06 × 8,774.03
  4. Step 4: Simplify right side
    19,171.19x = 252,227,566.85
  5. Step 5: Solve for x
    x = 252,227,566.85/19,171.19
  6. Step 6: Final answer
    x = 13,156.59

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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.