Home / 20,762,910.90-31,135,035.15-7,979,166.90

Finding the Fourth Proportional to 20,762,910.90, 31,135,035.15 and 7,979,166.90

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Solution

The fourth proportional to 20,762,910.90, 31,135,035.15 and 7,979,166.90 is: 11,965,164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,910.90 : 31,135,035.15 = 7,979,166.90 : x
  2. Step 2: Convert to fraction form
    20,762,910.90/31,135,035.15 = 7,979,166.90/x
  3. Step 3: Cross multiply
    20,762,910.90x = 31,135,035.15 × 7,979,166.90
  4. Step 4: Simplify right side
    20,762,910.90x = 248,431,641,899,216.53
  5. Step 5: Solve for x
    x = 248,431,641,899,216.53/20,762,910.90
  6. Step 6: Final answer
    x = 11,965,164.38

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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.