Home / 13,720.02-20,579.97-3,331.77

Finding the Fourth Proportional to 13,720.02, 20,579.97 and 3,331.77

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Solution

The fourth proportional to 13,720.02, 20,579.97 and 3,331.77 is: 4,997.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.02 : 20,579.97 = 3,331.77 : x
  2. Step 2: Convert to fraction form
    13,720.02/20,579.97 = 3,331.77/x
  3. Step 3: Cross multiply
    13,720.02x = 20,579.97 × 3,331.77
  4. Step 4: Simplify right side
    13,720.02x = 68,567,726.65
  5. Step 5: Solve for x
    x = 68,567,726.65/13,720.02
  6. Step 6: Final answer
    x = 4,997.64

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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.