Home / 27,777.82-38,366.18-18,809.77

Finding the Fourth Proportional to 27,777.82, 38,366.18 and 18,809.77

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Solution

The fourth proportional to 27,777.82, 38,366.18 and 18,809.77 is: 25,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,777.82 : 38,366.18 = 18,809.77 : x
  2. Step 2: Convert to fraction form
    27,777.82/38,366.18 = 18,809.77/x
  3. Step 3: Cross multiply
    27,777.82x = 38,366.18 × 18,809.77
  4. Step 4: Simplify right side
    27,777.82x = 721,659,021.58
  5. Step 5: Solve for x
    x = 721,659,021.58/27,777.82
  6. Step 6: Final answer
    x = 25,979.69

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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.