Home / 31,581.36-43,580.56-19,644.36

Finding the Fourth Proportional to 31,581.36, 43,580.56 and 19,644.36

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Solution

The fourth proportional to 31,581.36, 43,580.56 and 19,644.36 is: 27,108.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,581.36 : 43,580.56 = 19,644.36 : x
  2. Step 2: Convert to fraction form
    31,581.36/43,580.56 = 19,644.36/x
  3. Step 3: Cross multiply
    31,581.36x = 43,580.56 × 19,644.36
  4. Step 4: Simplify right side
    31,581.36x = 856,112,209.64
  5. Step 5: Solve for x
    x = 856,112,209.64/31,581.36
  6. Step 6: Final answer
    x = 27,108.15

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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.