Home / 21,789.13-30,066.52-12,227.72

Finding the Fourth Proportional to 21,789.13, 30,066.52 and 12,227.72

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Solution

The fourth proportional to 21,789.13, 30,066.52 and 12,227.72 is: 16,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.13 : 30,066.52 = 12,227.72 : x
  2. Step 2: Convert to fraction form
    21,789.13/30,066.52 = 12,227.72/x
  3. Step 3: Cross multiply
    21,789.13x = 30,066.52 × 12,227.72
  4. Step 4: Simplify right side
    21,789.13x = 367,645,084.35
  5. Step 5: Solve for x
    x = 367,645,084.35/21,789.13
  6. Step 6: Final answer
    x = 16,872.87

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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.