Home / 20,407,579.65-28,161,396.77-12,672,456.03

Finding the Fourth Proportional to 20,407,579.65, 28,161,396.77 and 12,672,456.03

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Solution

The fourth proportional to 20,407,579.65, 28,161,396.77 and 12,672,456.03 is: 17,487,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,579.65 : 28,161,396.77 = 12,672,456.03 : x
  2. Step 2: Convert to fraction form
    20,407,579.65/28,161,396.77 = 12,672,456.03/x
  3. Step 3: Cross multiply
    20,407,579.65x = 28,161,396.77 × 12,672,456.03
  4. Step 4: Simplify right side
    20,407,579.65x = 356,874,062,247,846.75
  5. Step 5: Solve for x
    x = 356,874,062,247,846.75/20,407,579.65
  6. Step 6: Final answer
    x = 17,487,329.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.