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Finding the Fourth Proportional to 19,160.56, 28,744.08 and 8,773.12

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Solution

The fourth proportional to 19,160.56, 28,744.08 and 8,773.12 is: 13,161.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,160.56 : 28,744.08 = 8,773.12 : x
  2. Step 2: Convert to fraction form
    19,160.56/28,744.08 = 8,773.12/x
  3. Step 3: Cross multiply
    19,160.56x = 28,744.08 × 8,773.12
  4. Step 4: Simplify right side
    19,160.56x = 252,175,263.13
  5. Step 5: Solve for x
    x = 252,175,263.13/19,160.56
  6. Step 6: Final answer
    x = 13,161.16

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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.