Home / 20,460.14-28,234.72-11,507.64

Finding the Fourth Proportional to 20,460.14, 28,234.72 and 11,507.64

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Solution

The fourth proportional to 20,460.14, 28,234.72 and 11,507.64 is: 15,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.14 : 28,234.72 = 11,507.64 : x
  2. Step 2: Convert to fraction form
    20,460.14/28,234.72 = 11,507.64/x
  3. Step 3: Cross multiply
    20,460.14x = 28,234.72 × 11,507.64
  4. Step 4: Simplify right side
    20,460.14x = 324,915,063.85
  5. Step 5: Solve for x
    x = 324,915,063.85/20,460.14
  6. Step 6: Final answer
    x = 15,880.39

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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.