Home / 10,481.21-15,716.79-4,929.87

Finding the Fourth Proportional to 10,481.21, 15,716.79 and 4,929.87

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Solution

The fourth proportional to 10,481.21, 15,716.79 and 4,929.87 is: 7,392.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.21 : 15,716.79 = 4,929.87 : x
  2. Step 2: Convert to fraction form
    10,481.21/15,716.79 = 4,929.87/x
  3. Step 3: Cross multiply
    10,481.21x = 15,716.79 × 4,929.87
  4. Step 4: Simplify right side
    10,481.21x = 77,481,731.52
  5. Step 5: Solve for x
    x = 77,481,731.52/10,481.21
  6. Step 6: Final answer
    x = 7,392.45

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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.