Home / 20,514.36-30,731.37-18,282.86

Finding the Fourth Proportional to 20,514.36, 30,731.37 and 18,282.86

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Solution

The fourth proportional to 20,514.36, 30,731.37 and 18,282.86 is: 27,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.36 : 30,731.37 = 18,282.86 : x
  2. Step 2: Convert to fraction form
    20,514.36/30,731.37 = 18,282.86/x
  3. Step 3: Cross multiply
    20,514.36x = 30,731.37 × 18,282.86
  4. Step 4: Simplify right side
    20,514.36x = 561,857,555.47
  5. Step 5: Solve for x
    x = 561,857,555.47/20,514.36
  6. Step 6: Final answer
    x = 27,388.50

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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.