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Finding the Fourth Proportional to 18,146.43, 27,211.95 and 13,174.65

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Solution

The fourth proportional to 18,146.43, 27,211.95 and 13,174.65 is: 19,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,146.43 : 27,211.95 = 13,174.65 : x
  2. Step 2: Convert to fraction form
    18,146.43/27,211.95 = 13,174.65/x
  3. Step 3: Cross multiply
    18,146.43x = 27,211.95 × 13,174.65
  4. Step 4: Simplify right side
    18,146.43x = 358,507,917.07
  5. Step 5: Solve for x
    x = 358,507,917.07/18,146.43
  6. Step 6: Final answer
    x = 19,756.39

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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.