Home / 13,140.92-19,712.74-4,255.58

Finding the Fourth Proportional to 13,140.92, 19,712.74 and 4,255.58

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Solution

The fourth proportional to 13,140.92, 19,712.74 and 4,255.58 is: 6,383.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.92 : 19,712.74 = 4,255.58 : x
  2. Step 2: Convert to fraction form
    13,140.92/19,712.74 = 4,255.58/x
  3. Step 3: Cross multiply
    13,140.92x = 19,712.74 × 4,255.58
  4. Step 4: Simplify right side
    13,140.92x = 83,889,142.09
  5. Step 5: Solve for x
    x = 83,889,142.09/13,140.92
  6. Step 6: Final answer
    x = 6,383.81

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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.