Home / 13,901.79-20,850.17-5,581.47

Finding the Fourth Proportional to 13,901.79, 20,850.17 and 5,581.47

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Solution

The fourth proportional to 13,901.79, 20,850.17 and 5,581.47 is: 8,371.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.79 : 20,850.17 = 5,581.47 : x
  2. Step 2: Convert to fraction form
    13,901.79/20,850.17 = 5,581.47/x
  3. Step 3: Cross multiply
    13,901.79x = 20,850.17 × 5,581.47
  4. Step 4: Simplify right side
    13,901.79x = 116,374,570.44
  5. Step 5: Solve for x
    x = 116,374,570.44/13,901.79
  6. Step 6: Final answer
    x = 8,371.19

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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.