Home / 13,086,331.20-18,047,380.78-8,191,999.48

Finding the Fourth Proportional to 13,086,331.20, 18,047,380.78 and 8,191,999.48

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Solution

The fourth proportional to 13,086,331.20, 18,047,380.78 and 8,191,999.48 is: 11,297,599.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086,331.20 : 18,047,380.78 = 8,191,999.48 : x
  2. Step 2: Convert to fraction form
    13,086,331.20/18,047,380.78 = 8,191,999.48/x
  3. Step 3: Cross multiply
    13,086,331.20x = 18,047,380.78 × 8,191,999.48
  4. Step 4: Simplify right side
    13,086,331.20x = 147,844,133,951,841.25
  5. Step 5: Solve for x
    x = 147,844,133,951,841.25/13,086,331.20
  6. Step 6: Final answer
    x = 11,297,599.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.