Home / 20,873,998.70-31,310,998.05-13,221,248.30

Finding the Fourth Proportional to 20,873,998.70, 31,310,998.05 and 13,221,248.30

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Solution

The fourth proportional to 20,873,998.70, 31,310,998.05 and 13,221,248.30 is: 19,831,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873,998.70 : 31,310,998.05 = 13,221,248.30 : x
  2. Step 2: Convert to fraction form
    20,873,998.70/31,310,998.05 = 13,221,248.30/x
  3. Step 3: Cross multiply
    20,873,998.70x = 31,310,998.05 × 13,221,248.30
  4. Step 4: Simplify right side
    20,873,998.70x = 413,970,479,739,865.88
  5. Step 5: Solve for x
    x = 413,970,479,739,865.88/20,873,998.70
  6. Step 6: Final answer
    x = 19,831,872.45

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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.