Home / 21,794.91-30,076.70-12,842.79

Finding the Fourth Proportional to 21,794.91, 30,076.70 and 12,842.79

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Solution

The fourth proportional to 21,794.91, 30,076.70 and 12,842.79 is: 17,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.91 : 30,076.70 = 12,842.79 : x
  2. Step 2: Convert to fraction form
    21,794.91/30,076.70 = 12,842.79/x
  3. Step 3: Cross multiply
    21,794.91x = 30,076.70 × 12,842.79
  4. Step 4: Simplify right side
    21,794.91x = 386,268,677.78
  5. Step 5: Solve for x
    x = 386,268,677.78/21,794.91
  6. Step 6: Final answer
    x = 17,722.88

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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.