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Finding the Fourth Proportional to 18,617, 27,939.34 and 7,523.79

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Solution

The fourth proportional to 18,617, 27,939.34 and 7,523.79 is: 11,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617 : 27,939.34 = 7,523.79 : x
  2. Step 2: Convert to fraction form
    18,617/27,939.34 = 7,523.79/x
  3. Step 3: Cross multiply
    18,617x = 27,939.34 × 7,523.79
  4. Step 4: Simplify right side
    18,617x = 210,209,726.90
  5. Step 5: Solve for x
    x = 210,209,726.90/18,617
  6. Step 6: Final answer
    x = 11,291.28

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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.