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Finding the Fourth Proportional to 26,690.88, 36,839.04 and 15,361.92

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Solution

The fourth proportional to 26,690.88, 36,839.04 and 15,361.92 is: 21,202.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,690.88 : 36,839.04 = 15,361.92 : x
  2. Step 2: Convert to fraction form
    26,690.88/36,839.04 = 15,361.92/x
  3. Step 3: Cross multiply
    26,690.88x = 36,839.04 × 15,361.92
  4. Step 4: Simplify right side
    26,690.88x = 565,918,385.36
  5. Step 5: Solve for x
    x = 565,918,385.36/26,690.88
  6. Step 6: Final answer
    x = 21,202.69

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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.