Home / 20,885,683.20-31,328,481.52-11,783,648.80

Finding the Fourth Proportional to 20,885,683.20, 31,328,481.52 and 11,783,648.80

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Solution

The fourth proportional to 20,885,683.20, 31,328,481.52 and 11,783,648.80 is: 17,675,448.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,683.20 : 31,328,481.52 = 11,783,648.80 : x
  2. Step 2: Convert to fraction form
    20,885,683.20/31,328,481.52 = 11,783,648.80/x
  3. Step 3: Cross multiply
    20,885,683.20x = 31,328,481.52 × 11,783,648.80
  4. Step 4: Simplify right side
    20,885,683.20x = 369,163,823,668,970.19
  5. Step 5: Solve for x
    x = 369,163,823,668,970.19/20,885,683.20
  6. Step 6: Final answer
    x = 17,675,448.78

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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.