Home / 31,425.78-43,368.32-17,086.43

Finding the Fourth Proportional to 31,425.78, 43,368.32 and 17,086.43

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Solution

The fourth proportional to 31,425.78, 43,368.32 and 17,086.43 is: 23,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.78 : 43,368.32 = 17,086.43 : x
  2. Step 2: Convert to fraction form
    31,425.78/43,368.32 = 17,086.43/x
  3. Step 3: Cross multiply
    31,425.78x = 43,368.32 × 17,086.43
  4. Step 4: Simplify right side
    31,425.78x = 741,009,915.03
  5. Step 5: Solve for x
    x = 741,009,915.03/31,425.78
  6. Step 6: Final answer
    x = 23,579.68

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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.