Home / 13,775.76-20,663.82-3,387.50

Finding the Fourth Proportional to 13,775.76, 20,663.82 and 3,387.50

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Solution

The fourth proportional to 13,775.76, 20,663.82 and 3,387.50 is: 5,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.76 : 20,663.82 = 3,387.50 : x
  2. Step 2: Convert to fraction form
    13,775.76/20,663.82 = 3,387.50/x
  3. Step 3: Cross multiply
    13,775.76x = 20,663.82 × 3,387.50
  4. Step 4: Simplify right side
    13,775.76x = 69,998,690.25
  5. Step 5: Solve for x
    x = 69,998,690.25/13,775.76
  6. Step 6: Final answer
    x = 5,081.29

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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.