Home / 10,388.25-14,335.79-5,672.84

Finding the Fourth Proportional to 10,388.25, 14,335.79 and 5,672.84

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Solution

The fourth proportional to 10,388.25, 14,335.79 and 5,672.84 is: 7,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.25 : 14,335.79 = 5,672.84 : x
  2. Step 2: Convert to fraction form
    10,388.25/14,335.79 = 5,672.84/x
  3. Step 3: Cross multiply
    10,388.25x = 14,335.79 × 5,672.84
  4. Step 4: Simplify right side
    10,388.25x = 81,324,542.90
  5. Step 5: Solve for x
    x = 81,324,542.90/10,388.25
  6. Step 6: Final answer
    x = 7,828.51

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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.