Home / 13,120,086.20-19,683,815.70-6,388,719.80

Finding the Fourth Proportional to 13,120,086.20, 19,683,815.70 and 6,388,719.80

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Solution

The fourth proportional to 13,120,086.20, 19,683,815.70 and 6,388,719.80 is: 9,584,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,086.20 : 19,683,815.70 = 6,388,719.80 : x
  2. Step 2: Convert to fraction form
    13,120,086.20/19,683,815.70 = 6,388,719.80/x
  3. Step 3: Cross multiply
    13,120,086.20x = 19,683,815.70 × 6,388,719.80
  4. Step 4: Simplify right side
    13,120,086.20x = 125,754,383,102,140.86
  5. Step 5: Solve for x
    x = 125,754,383,102,140.86/13,120,086.20
  6. Step 6: Final answer
    x = 9,584,874.76

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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.