Home / 20,873,999.20-31,310,998.80-13,221,248.80

Finding the Fourth Proportional to 20,873,999.20, 31,310,998.80 and 13,221,248.80

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Solution

The fourth proportional to 20,873,999.20, 31,310,998.80 and 13,221,248.80 is: 19,831,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873,999.20 : 31,310,998.80 = 13,221,248.80 : x
  2. Step 2: Convert to fraction form
    20,873,999.20/31,310,998.80 = 13,221,248.80/x
  3. Step 3: Cross multiply
    20,873,999.20x = 31,310,998.80 × 13,221,248.80
  4. Step 4: Simplify right side
    20,873,999.20x = 413,970,505,311,301.50
  5. Step 5: Solve for x
    x = 413,970,505,311,301.50/20,873,999.20
  6. Step 6: Final answer
    x = 19,831,873.20

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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.