Home / 20,328.96-30,493.56-7,180.56

Finding the Fourth Proportional to 20,328.96, 30,493.56 and 7,180.56

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Solution

The fourth proportional to 20,328.96, 30,493.56 and 7,180.56 is: 10,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.96 : 30,493.56 = 7,180.56 : x
  2. Step 2: Convert to fraction form
    20,328.96/30,493.56 = 7,180.56/x
  3. Step 3: Cross multiply
    20,328.96x = 30,493.56 × 7,180.56
  4. Step 4: Simplify right side
    20,328.96x = 218,960,837.19
  5. Step 5: Solve for x
    x = 218,960,837.19/20,328.96
  6. Step 6: Final answer
    x = 10,770.88

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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.