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Finding the Fourth Proportional to 19,172.67, 28,759.01 and 8,784.42

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Solution

The fourth proportional to 19,172.67, 28,759.01 and 8,784.42 is: 13,176.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.67 : 28,759.01 = 8,784.42 : x
  2. Step 2: Convert to fraction form
    19,172.67/28,759.01 = 8,784.42/x
  3. Step 3: Cross multiply
    19,172.67x = 28,759.01 × 8,784.42
  4. Step 4: Simplify right side
    19,172.67x = 252,631,178.70
  5. Step 5: Solve for x
    x = 252,631,178.70/19,172.67
  6. Step 6: Final answer
    x = 13,176.63

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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.