Home / 12,491.48-18,738.03-3,727.28

Finding the Fourth Proportional to 12,491.48, 18,738.03 and 3,727.28

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Solution

The fourth proportional to 12,491.48, 18,738.03 and 3,727.28 is: 5,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.48 : 18,738.03 = 3,727.28 : x
  2. Step 2: Convert to fraction form
    12,491.48/18,738.03 = 3,727.28/x
  3. Step 3: Cross multiply
    12,491.48x = 18,738.03 × 3,727.28
  4. Step 4: Simplify right side
    12,491.48x = 69,841,884.46
  5. Step 5: Solve for x
    x = 69,841,884.46/12,491.48
  6. Step 6: Final answer
    x = 5,591.16

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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.