Home / 13,445.82-20,171.07-5,126.58

Finding the Fourth Proportional to 13,445.82, 20,171.07 and 5,126.58

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Solution

The fourth proportional to 13,445.82, 20,171.07 and 5,126.58 is: 7,690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.82 : 20,171.07 = 5,126.58 : x
  2. Step 2: Convert to fraction form
    13,445.82/20,171.07 = 5,126.58/x
  3. Step 3: Cross multiply
    13,445.82x = 20,171.07 × 5,126.58
  4. Step 4: Simplify right side
    13,445.82x = 103,408,604.04
  5. Step 5: Solve for x
    x = 103,408,604.04/13,445.82
  6. Step 6: Final answer
    x = 7,690.76

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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.