Home / 13,520.53-20,280.84-4,160.49

Finding the Fourth Proportional to 13,520.53, 20,280.84 and 4,160.49

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Solution

The fourth proportional to 13,520.53, 20,280.84 and 4,160.49 is: 6,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.53 : 20,280.84 = 4,160.49 : x
  2. Step 2: Convert to fraction form
    13,520.53/20,280.84 = 4,160.49/x
  3. Step 3: Cross multiply
    13,520.53x = 20,280.84 × 4,160.49
  4. Step 4: Simplify right side
    13,520.53x = 84,378,232.01
  5. Step 5: Solve for x
    x = 84,378,232.01/13,520.53
  6. Step 6: Final answer
    x = 6,240.75

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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.