Home / 13,745.28-20,619.96-5,847.72

Finding the Fourth Proportional to 13,745.28, 20,619.96 and 5,847.72

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Solution

The fourth proportional to 13,745.28, 20,619.96 and 5,847.72 is: 8,772.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.28 : 20,619.96 = 5,847.72 : x
  2. Step 2: Convert to fraction form
    13,745.28/20,619.96 = 5,847.72/x
  3. Step 3: Cross multiply
    13,745.28x = 20,619.96 × 5,847.72
  4. Step 4: Simplify right side
    13,745.28x = 120,579,752.49
  5. Step 5: Solve for x
    x = 120,579,752.49/13,745.28
  6. Step 6: Final answer
    x = 8,772.45

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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.