Home / 13,776.31-20,664.61-5,458.36

Finding the Fourth Proportional to 13,776.31, 20,664.61 and 5,458.36

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Solution

The fourth proportional to 13,776.31, 20,664.61 and 5,458.36 is: 8,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.31 : 20,664.61 = 5,458.36 : x
  2. Step 2: Convert to fraction form
    13,776.31/20,664.61 = 5,458.36/x
  3. Step 3: Cross multiply
    13,776.31x = 20,664.61 × 5,458.36
  4. Step 4: Simplify right side
    13,776.31x = 112,794,880.64
  5. Step 5: Solve for x
    x = 112,794,880.64/13,776.31
  6. Step 6: Final answer
    x = 8,187.60

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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.