Home / 13,651.87-20,477.78-4,292.70

Finding the Fourth Proportional to 13,651.87, 20,477.78 and 4,292.70

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Solution

The fourth proportional to 13,651.87, 20,477.78 and 4,292.70 is: 6,439.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.87 : 20,477.78 = 4,292.70 : x
  2. Step 2: Convert to fraction form
    13,651.87/20,477.78 = 4,292.70/x
  3. Step 3: Cross multiply
    13,651.87x = 20,477.78 × 4,292.70
  4. Step 4: Simplify right side
    13,651.87x = 87,904,970.44
  5. Step 5: Solve for x
    x = 87,904,970.44/13,651.87
  6. Step 6: Final answer
    x = 6,439.04

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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.