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Finding the Fourth Proportional to 18,348.74, 27,516.06 and 7,812.08

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Solution

The fourth proportional to 18,348.74, 27,516.06 and 7,812.08 is: 11,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.74 : 27,516.06 = 7,812.08 : x
  2. Step 2: Convert to fraction form
    18,348.74/27,516.06 = 7,812.08/x
  3. Step 3: Cross multiply
    18,348.74x = 27,516.06 × 7,812.08
  4. Step 4: Simplify right side
    18,348.74x = 214,957,524.42
  5. Step 5: Solve for x
    x = 214,957,524.42/18,348.74
  6. Step 6: Final answer
    x = 11,715.11

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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.