Home / 20,453.14-30,680.10-6,412.86

Finding the Fourth Proportional to 20,453.14, 30,680.10 and 6,412.86

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Solution

The fourth proportional to 20,453.14, 30,680.10 and 6,412.86 is: 9,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.14 : 30,680.10 = 6,412.86 : x
  2. Step 2: Convert to fraction form
    20,453.14/30,680.10 = 6,412.86/x
  3. Step 3: Cross multiply
    20,453.14x = 30,680.10 × 6,412.86
  4. Step 4: Simplify right side
    20,453.14x = 196,747,186.09
  5. Step 5: Solve for x
    x = 196,747,186.09/20,453.14
  6. Step 6: Final answer
    x = 9,619.41

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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.