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Finding the Fourth Proportional to 18,670.01, 27,939.21 and 11,653.32

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Solution

The fourth proportional to 18,670.01, 27,939.21 and 11,653.32 is: 17,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.01 : 27,939.21 = 11,653.32 : x
  2. Step 2: Convert to fraction form
    18,670.01/27,939.21 = 11,653.32/x
  3. Step 3: Cross multiply
    18,670.01x = 27,939.21 × 11,653.32
  4. Step 4: Simplify right side
    18,670.01x = 325,584,554.68
  5. Step 5: Solve for x
    x = 325,584,554.68/18,670.01
  6. Step 6: Final answer
    x = 17,438.91

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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.