Home / 31,278.12-43,153.02-17,839.68

Finding the Fourth Proportional to 31,278.12, 43,153.02 and 17,839.68

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Solution

The fourth proportional to 31,278.12, 43,153.02 and 17,839.68 is: 24,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.12 : 43,153.02 = 17,839.68 : x
  2. Step 2: Convert to fraction form
    31,278.12/43,153.02 = 17,839.68/x
  3. Step 3: Cross multiply
    31,278.12x = 43,153.02 × 17,839.68
  4. Step 4: Simplify right side
    31,278.12x = 769,836,067.83
  5. Step 5: Solve for x
    x = 769,836,067.83/31,278.12
  6. Step 6: Final answer
    x = 24,612.61

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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.