Home / 21,789,021.20-32,683,531.80-18,387,798.80

Finding the Fourth Proportional to 21,789,021.20, 32,683,531.80 and 18,387,798.80

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Solution

The fourth proportional to 21,789,021.20, 32,683,531.80 and 18,387,798.80 is: 27,581,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789,021.20 : 32,683,531.80 = 18,387,798.80 : x
  2. Step 2: Convert to fraction form
    21,789,021.20/32,683,531.80 = 18,387,798.80/x
  3. Step 3: Cross multiply
    21,789,021.20x = 32,683,531.80 × 18,387,798.80
  4. Step 4: Simplify right side
    21,789,021.20x = 600,978,206,811,801.88
  5. Step 5: Solve for x
    x = 600,978,206,811,801.88/21,789,021.20
  6. Step 6: Final answer
    x = 27,581,698.20

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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.