Home / 22,734.82-31,378.89-15,278.50

Finding the Fourth Proportional to 22,734.82, 31,378.89 and 15,278.50

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Solution

The fourth proportional to 22,734.82, 31,378.89 and 15,278.50 is: 21,087.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,734.82 : 31,378.89 = 15,278.50 : x
  2. Step 2: Convert to fraction form
    22,734.82/31,378.89 = 15,278.50/x
  3. Step 3: Cross multiply
    22,734.82x = 31,378.89 × 15,278.50
  4. Step 4: Simplify right side
    22,734.82x = 479,422,370.87
  5. Step 5: Solve for x
    x = 479,422,370.87/22,734.82
  6. Step 6: Final answer
    x = 21,087.58

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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.