Home / 20,808,172.52-28,714,629.30-11,515,183.32

Finding the Fourth Proportional to 20,808,172.52, 28,714,629.30 and 11,515,183.32

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Solution

The fourth proportional to 20,808,172.52, 28,714,629.30 and 11,515,183.32 is: 15,890,593.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,172.52 : 28,714,629.30 = 11,515,183.32 : x
  2. Step 2: Convert to fraction form
    20,808,172.52/28,714,629.30 = 11,515,183.32/x
  3. Step 3: Cross multiply
    20,808,172.52x = 28,714,629.30 × 11,515,183.32
  4. Step 4: Simplify right side
    20,808,172.52x = 330,654,220,355,343.31
  5. Step 5: Solve for x
    x = 330,654,220,355,343.31/20,808,172.52
  6. Step 6: Final answer
    x = 15,890,593.95

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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.