Home / 20,218.08-27,928.17-18,331.77

Finding the Fourth Proportional to 20,218.08, 27,928.17 and 18,331.77

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Solution

The fourth proportional to 20,218.08, 27,928.17 and 18,331.77 is: 25,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.08 : 27,928.17 = 18,331.77 : x
  2. Step 2: Convert to fraction form
    20,218.08/27,928.17 = 18,331.77/x
  3. Step 3: Cross multiply
    20,218.08x = 27,928.17 × 18,331.77
  4. Step 4: Simplify right side
    20,218.08x = 511,972,788.96
  5. Step 5: Solve for x
    x = 511,972,788.96/20,218.08
  6. Step 6: Final answer
    x = 25,322.52

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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.