Home / 12,621.74-18,936.54-5,229.68

Finding the Fourth Proportional to 12,621.74, 18,936.54 and 5,229.68

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Solution

The fourth proportional to 12,621.74, 18,936.54 and 5,229.68 is: 7,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.74 : 18,936.54 = 5,229.68 : x
  2. Step 2: Convert to fraction form
    12,621.74/18,936.54 = 5,229.68/x
  3. Step 3: Cross multiply
    12,621.74x = 18,936.54 × 5,229.68
  4. Step 4: Simplify right side
    12,621.74x = 99,031,949.82
  5. Step 5: Solve for x
    x = 99,031,949.82/12,621.74
  6. Step 6: Final answer
    x = 7,846.14

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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.