Home / 20,621.46-30,934.18-5,830.86

Finding the Fourth Proportional to 20,621.46, 30,934.18 and 5,830.86

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Solution

The fourth proportional to 20,621.46, 30,934.18 and 5,830.86 is: 8,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.46 : 30,934.18 = 5,830.86 : x
  2. Step 2: Convert to fraction form
    20,621.46/30,934.18 = 5,830.86/x
  3. Step 3: Cross multiply
    20,621.46x = 30,934.18 × 5,830.86
  4. Step 4: Simplify right side
    20,621.46x = 180,372,872.79
  5. Step 5: Solve for x
    x = 180,372,872.79/20,621.46
  6. Step 6: Final answer
    x = 8,746.85

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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.