Home / 20,885,679.20-31,328,475.52-11,783,644.80

Finding the Fourth Proportional to 20,885,679.20, 31,328,475.52 and 11,783,644.80

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Solution

The fourth proportional to 20,885,679.20, 31,328,475.52 and 11,783,644.80 is: 17,675,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,679.20 : 31,328,475.52 = 11,783,644.80 : x
  2. Step 2: Convert to fraction form
    20,885,679.20/31,328,475.52 = 11,783,644.80/x
  3. Step 3: Cross multiply
    20,885,679.20x = 31,328,475.52 × 11,783,644.80
  4. Step 4: Simplify right side
    20,885,679.20x = 369,163,627,653,175.31
  5. Step 5: Solve for x
    x = 369,163,627,653,175.31/20,885,679.20
  6. Step 6: Final answer
    x = 17,675,442.78

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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.