Home / 26,796.20-36,936.13-21,121.74

Finding the Fourth Proportional to 26,796.20, 36,936.13 and 21,121.74

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Solution

The fourth proportional to 26,796.20, 36,936.13 and 21,121.74 is: 29,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,796.20 : 36,936.13 = 21,121.74 : x
  2. Step 2: Convert to fraction form
    26,796.20/36,936.13 = 21,121.74/x
  3. Step 3: Cross multiply
    26,796.20x = 36,936.13 × 21,121.74
  4. Step 4: Simplify right side
    26,796.20x = 780,155,334.47
  5. Step 5: Solve for x
    x = 780,155,334.47/26,796.20
  6. Step 6: Final answer
    x = 29,114.40

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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.