Home / 20,781,001.85-31,171,502.78-19,363,825.85

Finding the Fourth Proportional to 20,781,001.85, 31,171,502.78 and 19,363,825.85

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Solution

The fourth proportional to 20,781,001.85, 31,171,502.78 and 19,363,825.85 is: 29,045,738.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,001.85 : 31,171,502.78 = 19,363,825.85 : x
  2. Step 2: Convert to fraction form
    20,781,001.85/31,171,502.78 = 19,363,825.85/x
  3. Step 3: Cross multiply
    20,781,001.85x = 31,171,502.78 × 19,363,825.85
  4. Step 4: Simplify right side
    20,781,001.85x = 603,599,551,217,891.75
  5. Step 5: Solve for x
    x = 603,599,551,217,891.75/20,781,001.85
  6. Step 6: Final answer
    x = 29,045,738.78

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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.