Home / 13,651.94-20,477.28-5,645.72

Finding the Fourth Proportional to 13,651.94, 20,477.28 and 5,645.72

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Solution

The fourth proportional to 13,651.94, 20,477.28 and 5,645.72 is: 8,468.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.94 : 20,477.28 = 5,645.72 : x
  2. Step 2: Convert to fraction form
    13,651.94/20,477.28 = 5,645.72/x
  3. Step 3: Cross multiply
    13,651.94x = 20,477.28 × 5,645.72
  4. Step 4: Simplify right side
    13,651.94x = 115,608,989.24
  5. Step 5: Solve for x
    x = 115,608,989.24/13,651.94
  6. Step 6: Final answer
    x = 8,468.32

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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.