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Finding the Fourth Proportional to 18,143.91, 27,226.38 and 7,613

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Solution

The fourth proportional to 18,143.91, 27,226.38 and 7,613 is: 11,423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.91 : 27,226.38 = 7,613 : x
  2. Step 2: Convert to fraction form
    18,143.91/27,226.38 = 7,613/x
  3. Step 3: Cross multiply
    18,143.91x = 27,226.38 × 7,613
  4. Step 4: Simplify right side
    18,143.91x = 207,274,392.88
  5. Step 5: Solve for x
    x = 207,274,392.88/18,143.91
  6. Step 6: Final answer
    x = 11,423.91

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Double scale
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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.