Home / 27,723.20-38,262.66-15,784.88

Finding the Fourth Proportional to 27,723.20, 38,262.66 and 15,784.88

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Solution

The fourth proportional to 27,723.20, 38,262.66 and 15,784.88 is: 21,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.20 : 38,262.66 = 15,784.88 : x
  2. Step 2: Convert to fraction form
    27,723.20/38,262.66 = 15,784.88/x
  3. Step 3: Cross multiply
    27,723.20x = 38,262.66 × 15,784.88
  4. Step 4: Simplify right side
    27,723.20x = 603,971,496.58
  5. Step 5: Solve for x
    x = 603,971,496.58/27,723.20
  6. Step 6: Final answer
    x = 21,785.78

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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.