Home / 13,747.28-20,606.87-5,415.83

Finding the Fourth Proportional to 13,747.28, 20,606.87 and 5,415.83

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Solution

The fourth proportional to 13,747.28, 20,606.87 and 5,415.83 is: 8,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.28 : 20,606.87 = 5,415.83 : x
  2. Step 2: Convert to fraction form
    13,747.28/20,606.87 = 5,415.83/x
  3. Step 3: Cross multiply
    13,747.28x = 20,606.87 × 5,415.83
  4. Step 4: Simplify right side
    13,747.28x = 111,603,292.53
  5. Step 5: Solve for x
    x = 111,603,292.53/13,747.28
  6. Step 6: Final answer
    x = 8,118.21

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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.