Home / 13,965.10-20,943.60-5,079.40

Finding the Fourth Proportional to 13,965.10, 20,943.60 and 5,079.40

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Solution

The fourth proportional to 13,965.10, 20,943.60 and 5,079.40 is: 7,617.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.10 : 20,943.60 = 5,079.40 : x
  2. Step 2: Convert to fraction form
    13,965.10/20,943.60 = 5,079.40/x
  3. Step 3: Cross multiply
    13,965.10x = 20,943.60 × 5,079.40
  4. Step 4: Simplify right side
    13,965.10x = 106,380,921.84
  5. Step 5: Solve for x
    x = 106,380,921.84/13,965.10
  6. Step 6: Final answer
    x = 7,617.63

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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.