Home / 21,768.84-32,660.28-8,613.90

Finding the Fourth Proportional to 21,768.84, 32,660.28 and 8,613.90

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Solution

The fourth proportional to 21,768.84, 32,660.28 and 8,613.90 is: 12,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.84 : 32,660.28 = 8,613.90 : x
  2. Step 2: Convert to fraction form
    21,768.84/32,660.28 = 8,613.90/x
  3. Step 3: Cross multiply
    21,768.84x = 32,660.28 × 8,613.90
  4. Step 4: Simplify right side
    21,768.84x = 281,332,385.89
  5. Step 5: Solve for x
    x = 281,332,385.89/21,768.84
  6. Step 6: Final answer
    x = 12,923.63

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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.