Home / 20,775,004.20-31,162,949.16-7,128,091.32

Finding the Fourth Proportional to 20,775,004.20, 31,162,949.16 and 7,128,091.32

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Solution

The fourth proportional to 20,775,004.20, 31,162,949.16 and 7,128,091.32 is: 10,692,288.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,004.20 : 31,162,949.16 = 7,128,091.32 : x
  2. Step 2: Convert to fraction form
    20,775,004.20/31,162,949.16 = 7,128,091.32/x
  3. Step 3: Cross multiply
    20,775,004.20x = 31,162,949.16 × 7,128,091.32
  4. Step 4: Simplify right side
    20,775,004.20x = 222,132,347,412,997.31
  5. Step 5: Solve for x
    x = 222,132,347,412,997.31/20,775,004.20
  6. Step 6: Final answer
    x = 10,692,288.93

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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.