Home / 13,949.34-20,911.86-5,629.02

Finding the Fourth Proportional to 13,949.34, 20,911.86 and 5,629.02

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Solution

The fourth proportional to 13,949.34, 20,911.86 and 5,629.02 is: 8,438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.34 : 20,911.86 = 5,629.02 : x
  2. Step 2: Convert to fraction form
    13,949.34/20,911.86 = 5,629.02/x
  3. Step 3: Cross multiply
    13,949.34x = 20,911.86 × 5,629.02
  4. Step 4: Simplify right side
    13,949.34x = 117,713,278.18
  5. Step 5: Solve for x
    x = 117,713,278.18/13,949.34
  6. Step 6: Final answer
    x = 8,438.63

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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.