Home / 13,408.27-20,112.47-5,515.09

Finding the Fourth Proportional to 13,408.27, 20,112.47 and 5,515.09

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Solution

The fourth proportional to 13,408.27, 20,112.47 and 5,515.09 is: 8,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.27 : 20,112.47 = 5,515.09 : x
  2. Step 2: Convert to fraction form
    13,408.27/20,112.47 = 5,515.09/x
  3. Step 3: Cross multiply
    13,408.27x = 20,112.47 × 5,515.09
  4. Step 4: Simplify right side
    13,408.27x = 110,922,082.17
  5. Step 5: Solve for x
    x = 110,922,082.17/13,408.27
  6. Step 6: Final answer
    x = 8,272.66

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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.