Home / 13,969.13-20,954.90-3,580.88

Finding the Fourth Proportional to 13,969.13, 20,954.90 and 3,580.88

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Solution

The fourth proportional to 13,969.13, 20,954.90 and 3,580.88 is: 5,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.13 : 20,954.90 = 3,580.88 : x
  2. Step 2: Convert to fraction form
    13,969.13/20,954.90 = 3,580.88/x
  3. Step 3: Cross multiply
    13,969.13x = 20,954.90 × 3,580.88
  4. Step 4: Simplify right side
    13,969.13x = 75,036,886.49
  5. Step 5: Solve for x
    x = 75,036,886.49/13,969.13
  6. Step 6: Final answer
    x = 5,371.62

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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.