Home / 20,912,635.10-28,850,484.45-13,058,511.89

Finding the Fourth Proportional to 20,912,635.10, 28,850,484.45 and 13,058,511.89

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Solution

The fourth proportional to 20,912,635.10, 28,850,484.45 and 13,058,511.89 is: 18,015,156.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,635.10 : 28,850,484.45 = 13,058,511.89 : x
  2. Step 2: Convert to fraction form
    20,912,635.10/28,850,484.45 = 13,058,511.89/x
  3. Step 3: Cross multiply
    20,912,635.10x = 28,850,484.45 × 13,058,511.89
  4. Step 4: Simplify right side
    20,912,635.10x = 376,744,394,078,332.69
  5. Step 5: Solve for x
    x = 376,744,394,078,332.69/20,912,635.10
  6. Step 6: Final answer
    x = 18,015,156.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.