Home / 20,809,617.60-31,214,426.40-20,384,464.80

Finding the Fourth Proportional to 20,809,617.60, 31,214,426.40 and 20,384,464.80

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Solution

The fourth proportional to 20,809,617.60, 31,214,426.40 and 20,384,464.80 is: 30,576,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,617.60 : 31,214,426.40 = 20,384,464.80 : x
  2. Step 2: Convert to fraction form
    20,809,617.60/31,214,426.40 = 20,384,464.80/x
  3. Step 3: Cross multiply
    20,809,617.60x = 31,214,426.40 × 20,384,464.80
  4. Step 4: Simplify right side
    20,809,617.60x = 636,289,376,202,990.75
  5. Step 5: Solve for x
    x = 636,289,376,202,990.75/20,809,617.60
  6. Step 6: Final answer
    x = 30,576,697.20

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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.