Home / 20,511,537.92-28,314,637.98-12,780,399.98

Finding the Fourth Proportional to 20,511,537.92, 28,314,637.98 and 12,780,399.98

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Solution

The fourth proportional to 20,511,537.92, 28,314,637.98 and 12,780,399.98 is: 17,642,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,537.92 : 28,314,637.98 = 12,780,399.98 : x
  2. Step 2: Convert to fraction form
    20,511,537.92/28,314,637.98 = 12,780,399.98/x
  3. Step 3: Cross multiply
    20,511,537.92x = 28,314,637.98 × 12,780,399.98
  4. Step 4: Simplify right side
    20,511,537.92x = 361,872,398,673,299.25
  5. Step 5: Solve for x
    x = 361,872,398,673,299.25/20,511,537.92
  6. Step 6: Final answer
    x = 17,642,382.55

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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.