Home / 31,622.94-43,648.05-19,679.46

Finding the Fourth Proportional to 31,622.94, 43,648.05 and 19,679.46

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Solution

The fourth proportional to 31,622.94, 43,648.05 and 19,679.46 is: 27,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.94 : 43,648.05 = 19,679.46 : x
  2. Step 2: Convert to fraction form
    31,622.94/43,648.05 = 19,679.46/x
  3. Step 3: Cross multiply
    31,622.94x = 43,648.05 × 19,679.46
  4. Step 4: Simplify right side
    31,622.94x = 858,970,054.05
  5. Step 5: Solve for x
    x = 858,970,054.05/31,622.94
  6. Step 6: Final answer
    x = 27,162.88

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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.