Home / 27,768.40-41,640.45-11,122.90

Finding the Fourth Proportional to 27,768.40, 41,640.45 and 11,122.90

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Solution

The fourth proportional to 27,768.40, 41,640.45 and 11,122.90 is: 16,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,768.40 : 41,640.45 = 11,122.90 : x
  2. Step 2: Convert to fraction form
    27,768.40/41,640.45 = 11,122.90/x
  3. Step 3: Cross multiply
    27,768.40x = 41,640.45 × 11,122.90
  4. Step 4: Simplify right side
    27,768.40x = 463,162,561.31
  5. Step 5: Solve for x
    x = 463,162,561.31/27,768.40
  6. Step 6: Final answer
    x = 16,679.48

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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.