Home / 20,468.88-28,245.04-11,516.16

Finding the Fourth Proportional to 20,468.88, 28,245.04 and 11,516.16

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Solution

The fourth proportional to 20,468.88, 28,245.04 and 11,516.16 is: 15,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.88 : 28,245.04 = 11,516.16 : x
  2. Step 2: Convert to fraction form
    20,468.88/28,245.04 = 11,516.16/x
  3. Step 3: Cross multiply
    20,468.88x = 28,245.04 × 11,516.16
  4. Step 4: Simplify right side
    20,468.88x = 325,274,399.85
  5. Step 5: Solve for x
    x = 325,274,399.85/20,468.88
  6. Step 6: Final answer
    x = 15,891.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.