Home / 20,794,072.60-31,193,193.30-7,145,421.40

Finding the Fourth Proportional to 20,794,072.60, 31,193,193.30 and 7,145,421.40

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Solution

The fourth proportional to 20,794,072.60, 31,193,193.30 and 7,145,421.40 is: 10,718,848.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794,072.60 : 31,193,193.30 = 7,145,421.40 : x
  2. Step 2: Convert to fraction form
    20,794,072.60/31,193,193.30 = 7,145,421.40/x
  3. Step 3: Cross multiply
    20,794,072.60x = 31,193,193.30 × 7,145,421.40
  4. Step 4: Simplify right side
    20,794,072.60x = 222,888,510,940,156.62
  5. Step 5: Solve for x
    x = 222,888,510,940,156.62/20,794,072.60
  6. Step 6: Final answer
    x = 10,718,848.36

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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.