Home / 13,775.53-20,663.69-3,387.25

Finding the Fourth Proportional to 13,775.53, 20,663.69 and 3,387.25

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Solution

The fourth proportional to 13,775.53, 20,663.69 and 3,387.25 is: 5,080.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.53 : 20,663.69 = 3,387.25 : x
  2. Step 2: Convert to fraction form
    13,775.53/20,663.69 = 3,387.25/x
  3. Step 3: Cross multiply
    13,775.53x = 20,663.69 × 3,387.25
  4. Step 4: Simplify right side
    13,775.53x = 69,993,083.95
  5. Step 5: Solve for x
    x = 69,993,083.95/13,775.53
  6. Step 6: Final answer
    x = 5,080.97

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1.5x scale

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.