Home / 13,743.41-20,612.75-3,880.39

Finding the Fourth Proportional to 13,743.41, 20,612.75 and 3,880.39

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Solution

The fourth proportional to 13,743.41, 20,612.75 and 3,880.39 is: 5,819.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.41 : 20,612.75 = 3,880.39 : x
  2. Step 2: Convert to fraction form
    13,743.41/20,612.75 = 3,880.39/x
  3. Step 3: Cross multiply
    13,743.41x = 20,612.75 × 3,880.39
  4. Step 4: Simplify right side
    13,743.41x = 79,985,386.51
  5. Step 5: Solve for x
    x = 79,985,386.51/13,743.41
  6. Step 6: Final answer
    x = 5,819.91

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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.