Home / 27,722.59-38,257.20-15,785.89

Finding the Fourth Proportional to 27,722.59, 38,257.20 and 15,785.89

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Solution

The fourth proportional to 27,722.59, 38,257.20 and 15,785.89 is: 21,784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.59 : 38,257.20 = 15,785.89 : x
  2. Step 2: Convert to fraction form
    27,722.59/38,257.20 = 15,785.89/x
  3. Step 3: Cross multiply
    27,722.59x = 38,257.20 × 15,785.89
  4. Step 4: Simplify right side
    27,722.59x = 603,923,950.91
  5. Step 5: Solve for x
    x = 603,923,950.91/27,722.59
  6. Step 6: Final answer
    x = 21,784.54

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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.