Home / 13,742.78-20,600.33-5,419.58

Finding the Fourth Proportional to 13,742.78, 20,600.33 and 5,419.58

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Solution

The fourth proportional to 13,742.78, 20,600.33 and 5,419.58 is: 8,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.78 : 20,600.33 = 5,419.58 : x
  2. Step 2: Convert to fraction form
    13,742.78/20,600.33 = 5,419.58/x
  3. Step 3: Cross multiply
    13,742.78x = 20,600.33 × 5,419.58
  4. Step 4: Simplify right side
    13,742.78x = 111,645,006.36
  5. Step 5: Solve for x
    x = 111,645,006.36/13,742.78
  6. Step 6: Final answer
    x = 8,123.90

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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.