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Finding the Fourth Proportional to 19,159.72, 28,748.22 and 8,774.44

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Solution

The fourth proportional to 19,159.72, 28,748.22 and 8,774.44 is: 13,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.72 : 28,748.22 = 8,774.44 : x
  2. Step 2: Convert to fraction form
    19,159.72/28,748.22 = 8,774.44/x
  3. Step 3: Cross multiply
    19,159.72x = 28,748.22 × 8,774.44
  4. Step 4: Simplify right side
    19,159.72x = 252,249,531.50
  5. Step 5: Solve for x
    x = 252,249,531.50/19,159.72
  6. Step 6: Final answer
    x = 13,165.62

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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.