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Finding the Fourth Proportional to 19,191.92, 28,796.22 and 6,720.89

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Solution

The fourth proportional to 19,191.92, 28,796.22 and 6,720.89 is: 10,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.92 : 28,796.22 = 6,720.89 : x
  2. Step 2: Convert to fraction form
    19,191.92/28,796.22 = 6,720.89/x
  3. Step 3: Cross multiply
    19,191.92x = 28,796.22 × 6,720.89
  4. Step 4: Simplify right side
    19,191.92x = 193,536,227.04
  5. Step 5: Solve for x
    x = 193,536,227.04/19,191.92
  6. Step 6: Final answer
    x = 10,084.26

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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.