Home / 27,789.96-38,350.32-15,215.88

Finding the Fourth Proportional to 27,789.96, 38,350.32 and 15,215.88

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Solution

The fourth proportional to 27,789.96, 38,350.32 and 15,215.88 is: 20,998.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.96 : 38,350.32 = 15,215.88 : x
  2. Step 2: Convert to fraction form
    27,789.96/38,350.32 = 15,215.88/x
  3. Step 3: Cross multiply
    27,789.96x = 38,350.32 × 15,215.88
  4. Step 4: Simplify right side
    27,789.96x = 583,533,867.08
  5. Step 5: Solve for x
    x = 583,533,867.08/27,789.96
  6. Step 6: Final answer
    x = 20,998.01

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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.