Home / 17,111.20-25,664.64-5,425.60

Finding the Fourth Proportional to 17,111.20, 25,664.64 and 5,425.60

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Solution

The fourth proportional to 17,111.20, 25,664.64 and 5,425.60 is: 8,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,111.20 : 25,664.64 = 5,425.60 : x
  2. Step 2: Convert to fraction form
    17,111.20/25,664.64 = 5,425.60/x
  3. Step 3: Cross multiply
    17,111.20x = 25,664.64 × 5,425.60
  4. Step 4: Simplify right side
    17,111.20x = 139,246,070.78
  5. Step 5: Solve for x
    x = 139,246,070.78/17,111.20
  6. Step 6: Final answer
    x = 8,137.72

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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.