Home / 31,317.84-43,236.38-19,836.09

Finding the Fourth Proportional to 31,317.84, 43,236.38 and 19,836.09

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Solution

The fourth proportional to 31,317.84, 43,236.38 and 19,836.09 is: 27,385.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,317.84 : 43,236.38 = 19,836.09 : x
  2. Step 2: Convert to fraction form
    31,317.84/43,236.38 = 19,836.09/x
  3. Step 3: Cross multiply
    31,317.84x = 43,236.38 × 19,836.09
  4. Step 4: Simplify right side
    31,317.84x = 857,640,774.54
  5. Step 5: Solve for x
    x = 857,640,774.54/31,317.84
  6. Step 6: Final answer
    x = 27,385.06

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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.