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Finding the Fourth Proportional to 19,902.70, 29,845.54 and 6,749.11

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Solution

The fourth proportional to 19,902.70, 29,845.54 and 6,749.11 is: 10,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.70 : 29,845.54 = 6,749.11 : x
  2. Step 2: Convert to fraction form
    19,902.70/29,845.54 = 6,749.11/x
  3. Step 3: Cross multiply
    19,902.70x = 29,845.54 × 6,749.11
  4. Step 4: Simplify right side
    19,902.70x = 201,430,832.47
  5. Step 5: Solve for x
    x = 201,430,832.47/19,902.70
  6. Step 6: Final answer
    x = 10,120.78

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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.