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Finding the Fourth Proportional to 19,998.80, 29,999.84 and 6,847.64

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Solution

The fourth proportional to 19,998.80, 29,999.84 and 6,847.64 is: 10,272.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.80 : 29,999.84 = 6,847.64 : x
  2. Step 2: Convert to fraction form
    19,998.80/29,999.84 = 6,847.64/x
  3. Step 3: Cross multiply
    19,998.80x = 29,999.84 × 6,847.64
  4. Step 4: Simplify right side
    19,998.80x = 205,428,104.38
  5. Step 5: Solve for x
    x = 205,428,104.38/19,998.80
  6. Step 6: Final answer
    x = 10,272.02

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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.