Home / 19,945.64-27,514.86-15,221.72

Finding the Fourth Proportional to 19,945.64, 27,514.86 and 15,221.72

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Solution

The fourth proportional to 19,945.64, 27,514.86 and 15,221.72 is: 20,998.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.64 : 27,514.86 = 15,221.72 : x
  2. Step 2: Convert to fraction form
    19,945.64/27,514.86 = 15,221.72/x
  3. Step 3: Cross multiply
    19,945.64x = 27,514.86 × 15,221.72
  4. Step 4: Simplify right side
    19,945.64x = 418,823,357.18
  5. Step 5: Solve for x
    x = 418,823,357.18/19,945.64
  6. Step 6: Final answer
    x = 20,998.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.