Home / 20,735.94-28,618.56-11,781.66

Finding the Fourth Proportional to 20,735.94, 28,618.56 and 11,781.66

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Solution

The fourth proportional to 20,735.94, 28,618.56 and 11,781.66 is: 16,260.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.94 : 28,618.56 = 11,781.66 : x
  2. Step 2: Convert to fraction form
    20,735.94/28,618.56 = 11,781.66/x
  3. Step 3: Cross multiply
    20,735.94x = 28,618.56 × 11,781.66
  4. Step 4: Simplify right side
    20,735.94x = 337,174,143.61
  5. Step 5: Solve for x
    x = 337,174,143.61/20,735.94
  6. Step 6: Final answer
    x = 16,260.37

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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.