Home / 13,743.78-20,601.82-5,420.58

Finding the Fourth Proportional to 13,743.78, 20,601.82 and 5,420.58

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Solution

The fourth proportional to 13,743.78, 20,601.82 and 5,420.58 is: 8,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.78 : 20,601.82 = 5,420.58 : x
  2. Step 2: Convert to fraction form
    13,743.78/20,601.82 = 5,420.58/x
  3. Step 3: Cross multiply
    13,743.78x = 20,601.82 × 5,420.58
  4. Step 4: Simplify right side
    13,743.78x = 111,673,813.46
  5. Step 5: Solve for x
    x = 111,673,813.46/13,743.78
  6. Step 6: Final answer
    x = 8,125.41

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1.5x scale

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.