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Finding the Fourth Proportional to 11,998.44, 17,988.48 and 8,290.08

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Solution

The fourth proportional to 11,998.44, 17,988.48 and 8,290.08 is: 12,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.44 : 17,988.48 = 8,290.08 : x
  2. Step 2: Convert to fraction form
    11,998.44/17,988.48 = 8,290.08/x
  3. Step 3: Cross multiply
    11,998.44x = 17,988.48 × 8,290.08
  4. Step 4: Simplify right side
    11,998.44x = 149,125,938.28
  5. Step 5: Solve for x
    x = 149,125,938.28/11,998.44
  6. Step 6: Final answer
    x = 12,428.78

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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.