Home / 21,789,020.70-32,683,531.05-18,387,798.30

Finding the Fourth Proportional to 21,789,020.70, 32,683,531.05 and 18,387,798.30

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Solution

The fourth proportional to 21,789,020.70, 32,683,531.05 and 18,387,798.30 is: 27,581,697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789,020.70 : 32,683,531.05 = 18,387,798.30 : x
  2. Step 2: Convert to fraction form
    21,789,020.70/32,683,531.05 = 18,387,798.30/x
  3. Step 3: Cross multiply
    21,789,020.70x = 32,683,531.05 × 18,387,798.30
  4. Step 4: Simplify right side
    21,789,020.70x = 600,978,176,679,187.25
  5. Step 5: Solve for x
    x = 600,978,176,679,187.25/21,789,020.70
  6. Step 6: Final answer
    x = 27,581,697.45

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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.