Home / 20,392,755.31-28,142,744.74-11,099,875.20

Finding the Fourth Proportional to 20,392,755.31, 28,142,744.74 and 11,099,875.20

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Solution

The fourth proportional to 20,392,755.31, 28,142,744.74 and 11,099,875.20 is: 15,318,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,755.31 : 28,142,744.74 = 11,099,875.20 : x
  2. Step 2: Convert to fraction form
    20,392,755.31/28,142,744.74 = 11,099,875.20/x
  3. Step 3: Cross multiply
    20,392,755.31x = 28,142,744.74 × 11,099,875.20
  4. Step 4: Simplify right side
    20,392,755.31x = 312,380,954,328,608.25
  5. Step 5: Solve for x
    x = 312,380,954,328,608.25/20,392,755.31
  6. Step 6: Final answer
    x = 15,318,231.87

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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.