Home / 31,481.28-47,250.72-19,815.36

Finding the Fourth Proportional to 31,481.28, 47,250.72 and 19,815.36

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Solution

The fourth proportional to 31,481.28, 47,250.72 and 19,815.36 is: 29,741.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,481.28 : 47,250.72 = 19,815.36 : x
  2. Step 2: Convert to fraction form
    31,481.28/47,250.72 = 19,815.36/x
  3. Step 3: Cross multiply
    31,481.28x = 47,250.72 × 19,815.36
  4. Step 4: Simplify right side
    31,481.28x = 936,290,027.06
  5. Step 5: Solve for x
    x = 936,290,027.06/31,481.28
  6. Step 6: Final answer
    x = 29,741.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.