Home / 45,182.78-67,774.85-11,906.20

Finding the Fourth Proportional to 45,182.78, 67,774.85 and 11,906.20

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Solution

The fourth proportional to 45,182.78, 67,774.85 and 11,906.20 is: 17,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,182.78 : 67,774.85 = 11,906.20 : x
  2. Step 2: Convert to fraction form
    45,182.78/67,774.85 = 11,906.20/x
  3. Step 3: Cross multiply
    45,182.78x = 67,774.85 × 11,906.20
  4. Step 4: Simplify right side
    45,182.78x = 806,940,988.91
  5. Step 5: Solve for x
    x = 806,940,988.91/45,182.78
  6. Step 6: Final answer
    x = 17,859.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.