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Finding the Fourth Proportional to 19,791.88, 29,688.73 and 11,020.19

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Solution

The fourth proportional to 19,791.88, 29,688.73 and 11,020.19 is: 16,530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.88 : 29,688.73 = 11,020.19 : x
  2. Step 2: Convert to fraction form
    19,791.88/29,688.73 = 11,020.19/x
  3. Step 3: Cross multiply
    19,791.88x = 29,688.73 × 11,020.19
  4. Step 4: Simplify right side
    19,791.88x = 327,175,269.46
  5. Step 5: Solve for x
    x = 327,175,269.46/19,791.88
  6. Step 6: Final answer
    x = 16,530.78

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1.5x scale

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.