Home / 20,190.23-30,257.58-10,308.68

Finding the Fourth Proportional to 20,190.23, 30,257.58 and 10,308.68

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Solution

The fourth proportional to 20,190.23, 30,257.58 and 10,308.68 is: 15,448.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.23 : 30,257.58 = 10,308.68 : x
  2. Step 2: Convert to fraction form
    20,190.23/30,257.58 = 10,308.68/x
  3. Step 3: Cross multiply
    20,190.23x = 30,257.58 × 10,308.68
  4. Step 4: Simplify right side
    20,190.23x = 311,915,709.79
  5. Step 5: Solve for x
    x = 311,915,709.79/20,190.23
  6. Step 6: Final answer
    x = 15,448.84

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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.