Home / 21,789,009.20-32,683,513.80-18,387,786.80

Finding the Fourth Proportional to 21,789,009.20, 32,683,513.80 and 18,387,786.80

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Solution

The fourth proportional to 21,789,009.20, 32,683,513.80 and 18,387,786.80 is: 27,581,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789,009.20 : 32,683,513.80 = 18,387,786.80 : x
  2. Step 2: Convert to fraction form
    21,789,009.20/32,683,513.80 = 18,387,786.80/x
  3. Step 3: Cross multiply
    21,789,009.20x = 32,683,513.80 × 18,387,786.80
  4. Step 4: Simplify right side
    21,789,009.20x = 600,977,483,629,257.88
  5. Step 5: Solve for x
    x = 600,977,483,629,257.88/21,789,009.20
  6. Step 6: Final answer
    x = 27,581,680.20

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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.