Home / 18,519.66-27,789.48-13,454.28

Finding the Fourth Proportional to 18,519.66, 27,789.48 and 13,454.28

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Solution

The fourth proportional to 18,519.66, 27,789.48 and 13,454.28 is: 20,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.66 : 27,789.48 = 13,454.28 : x
  2. Step 2: Convert to fraction form
    18,519.66/27,789.48 = 13,454.28/x
  3. Step 3: Cross multiply
    18,519.66x = 27,789.48 × 13,454.28
  4. Step 4: Simplify right side
    18,519.66x = 373,887,444.97
  5. Step 5: Solve for x
    x = 373,887,444.97/18,519.66
  6. Step 6: Final answer
    x = 20,188.68

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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.