Home / 22,780.42-34,170.88-7,989.70

Finding the Fourth Proportional to 22,780.42, 34,170.88 and 7,989.70

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Solution

The fourth proportional to 22,780.42, 34,170.88 and 7,989.70 is: 11,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.42 : 34,170.88 = 7,989.70 : x
  2. Step 2: Convert to fraction form
    22,780.42/34,170.88 = 7,989.70/x
  3. Step 3: Cross multiply
    22,780.42x = 34,170.88 × 7,989.70
  4. Step 4: Simplify right side
    22,780.42x = 273,015,079.94
  5. Step 5: Solve for x
    x = 273,015,079.94/22,780.42
  6. Step 6: Final answer
    x = 11,984.64

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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.