Home / 18,680.28-28,020.96-8,824.20

Finding the Fourth Proportional to 18,680.28, 28,020.96 and 8,824.20

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Solution

The fourth proportional to 18,680.28, 28,020.96 and 8,824.20 is: 13,236.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.28 : 28,020.96 = 8,824.20 : x
  2. Step 2: Convert to fraction form
    18,680.28/28,020.96 = 8,824.20/x
  3. Step 3: Cross multiply
    18,680.28x = 28,020.96 × 8,824.20
  4. Step 4: Simplify right side
    18,680.28x = 247,262,555.23
  5. Step 5: Solve for x
    x = 247,262,555.23/18,680.28
  6. Step 6: Final answer
    x = 13,236.56

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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.