Home / 20,315.52-30,452.76-8,621.28

Finding the Fourth Proportional to 20,315.52, 30,452.76 and 8,621.28

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Solution

The fourth proportional to 20,315.52, 30,452.76 and 8,621.28 is: 12,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.52 : 30,452.76 = 8,621.28 : x
  2. Step 2: Convert to fraction form
    20,315.52/30,452.76 = 8,621.28/x
  3. Step 3: Cross multiply
    20,315.52x = 30,452.76 × 8,621.28
  4. Step 4: Simplify right side
    20,315.52x = 262,541,770.73
  5. Step 5: Solve for x
    x = 262,541,770.73/20,315.52
  6. Step 6: Final answer
    x = 12,923.21

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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.