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Finding the Fourth Proportional to 18,792.82, 28,189.57 and 6,784.49

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Solution

The fourth proportional to 18,792.82, 28,189.57 and 6,784.49 is: 10,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.82 : 28,189.57 = 6,784.49 : x
  2. Step 2: Convert to fraction form
    18,792.82/28,189.57 = 6,784.49/x
  3. Step 3: Cross multiply
    18,792.82x = 28,189.57 × 6,784.49
  4. Step 4: Simplify right side
    18,792.82x = 191,251,714.82
  5. Step 5: Solve for x
    x = 191,251,714.82/18,792.82
  6. Step 6: Final answer
    x = 10,176.85

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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.