Home / 26,781.76-36,917.84-18,801.60

Finding the Fourth Proportional to 26,781.76, 36,917.84 and 18,801.60

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Solution

The fourth proportional to 26,781.76, 36,917.84 and 18,801.60 is: 25,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.76 : 36,917.84 = 18,801.60 : x
  2. Step 2: Convert to fraction form
    26,781.76/36,917.84 = 18,801.60/x
  3. Step 3: Cross multiply
    26,781.76x = 36,917.84 × 18,801.60
  4. Step 4: Simplify right side
    26,781.76x = 694,114,460.54
  5. Step 5: Solve for x
    x = 694,114,460.54/26,781.76
  6. Step 6: Final answer
    x = 25,917.43

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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.