Home / 21,882.72-30,194.64-12,451.44

Finding the Fourth Proportional to 21,882.72, 30,194.64 and 12,451.44

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Solution

The fourth proportional to 21,882.72, 30,194.64 and 12,451.44 is: 17,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.72 : 30,194.64 = 12,451.44 : x
  2. Step 2: Convert to fraction form
    21,882.72/30,194.64 = 12,451.44/x
  3. Step 3: Cross multiply
    21,882.72x = 30,194.64 × 12,451.44
  4. Step 4: Simplify right side
    21,882.72x = 375,966,748.28
  5. Step 5: Solve for x
    x = 375,966,748.28/21,882.72
  6. Step 6: Final answer
    x = 17,180.99

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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.