Home / 27,723.50-38,258.39-15,786.84

Finding the Fourth Proportional to 27,723.50, 38,258.39 and 15,786.84

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Solution

The fourth proportional to 27,723.50, 38,258.39 and 15,786.84 is: 21,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.50 : 38,258.39 = 15,786.84 : x
  2. Step 2: Convert to fraction form
    27,723.50/38,258.39 = 15,786.84/x
  3. Step 3: Cross multiply
    27,723.50x = 38,258.39 × 15,786.84
  4. Step 4: Simplify right side
    27,723.50x = 603,979,002.65
  5. Step 5: Solve for x
    x = 603,979,002.65/27,723.50
  6. Step 6: Final answer
    x = 21,785.81

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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.