Home / 11,621.71-17,428.20-4,224.34

Finding the Fourth Proportional to 11,621.71, 17,428.20 and 4,224.34

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Solution

The fourth proportional to 11,621.71, 17,428.20 and 4,224.34 is: 6,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.71 : 17,428.20 = 4,224.34 : x
  2. Step 2: Convert to fraction form
    11,621.71/17,428.20 = 4,224.34/x
  3. Step 3: Cross multiply
    11,621.71x = 17,428.20 × 4,224.34
  4. Step 4: Simplify right side
    11,621.71x = 73,622,642.39
  5. Step 5: Solve for x
    x = 73,622,642.39/11,621.71
  6. Step 6: Final answer
    x = 6,334.92

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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.