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Finding the Fourth Proportional to 19,849.92, 29,761.92 and 7,995.84

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Solution

The fourth proportional to 19,849.92, 29,761.92 and 7,995.84 is: 11,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,849.92 : 29,761.92 = 7,995.84 : x
  2. Step 2: Convert to fraction form
    19,849.92/29,761.92 = 7,995.84/x
  3. Step 3: Cross multiply
    19,849.92x = 29,761.92 × 7,995.84
  4. Step 4: Simplify right side
    19,849.92x = 237,971,550.41
  5. Step 5: Solve for x
    x = 237,971,550.41/19,849.92
  6. Step 6: Final answer
    x = 11,988.54

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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.