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Finding the Fourth Proportional to 19,998.98, 29,996.71 and 18,432.98

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Solution

The fourth proportional to 19,998.98, 29,996.71 and 18,432.98 is: 27,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.98 : 29,996.71 = 18,432.98 : x
  2. Step 2: Convert to fraction form
    19,998.98/29,996.71 = 18,432.98/x
  3. Step 3: Cross multiply
    19,998.98x = 29,996.71 × 18,432.98
  4. Step 4: Simplify right side
    19,998.98x = 552,928,755.50
  5. Step 5: Solve for x
    x = 552,928,755.50/19,998.98
  6. Step 6: Final answer
    x = 27,647.85

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Similar ratio
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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.