Home / 13,917.36-20,880.60-5,152.96

Finding the Fourth Proportional to 13,917.36, 20,880.60 and 5,152.96

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Solution

The fourth proportional to 13,917.36, 20,880.60 and 5,152.96 is: 7,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.36 : 20,880.60 = 5,152.96 : x
  2. Step 2: Convert to fraction form
    13,917.36/20,880.60 = 5,152.96/x
  3. Step 3: Cross multiply
    13,917.36x = 20,880.60 × 5,152.96
  4. Step 4: Simplify right side
    13,917.36x = 107,596,896.58
  5. Step 5: Solve for x
    x = 107,596,896.58/13,917.36
  6. Step 6: Final answer
    x = 7,731.13

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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.