Home / 13,789.68-20,686.44-5,028.72

Finding the Fourth Proportional to 13,789.68, 20,686.44 and 5,028.72

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Solution

The fourth proportional to 13,789.68, 20,686.44 and 5,028.72 is: 7,543.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.68 : 20,686.44 = 5,028.72 : x
  2. Step 2: Convert to fraction form
    13,789.68/20,686.44 = 5,028.72/x
  3. Step 3: Cross multiply
    13,789.68x = 20,686.44 × 5,028.72
  4. Step 4: Simplify right side
    13,789.68x = 104,026,314.56
  5. Step 5: Solve for x
    x = 104,026,314.56/13,789.68
  6. Step 6: Final answer
    x = 7,543.78

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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.