Home / 13,919.36-20,876.82-5,152.28

Finding the Fourth Proportional to 13,919.36, 20,876.82 and 5,152.28

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Solution

The fourth proportional to 13,919.36, 20,876.82 and 5,152.28 is: 7,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.36 : 20,876.82 = 5,152.28 : x
  2. Step 2: Convert to fraction form
    13,919.36/20,876.82 = 5,152.28/x
  3. Step 3: Cross multiply
    13,919.36x = 20,876.82 × 5,152.28
  4. Step 4: Simplify right side
    13,919.36x = 107,563,222.15
  5. Step 5: Solve for x
    x = 107,563,222.15/13,919.36
  6. Step 6: Final answer
    x = 7,727.60

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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.