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Finding the Fourth Proportional to 18,383.31, 27,587.22 and 11,814.21

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Solution

The fourth proportional to 18,383.31, 27,587.22 and 11,814.21 is: 17,729.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.31 : 27,587.22 = 11,814.21 : x
  2. Step 2: Convert to fraction form
    18,383.31/27,587.22 = 11,814.21/x
  3. Step 3: Cross multiply
    18,383.31x = 27,587.22 × 11,814.21
  4. Step 4: Simplify right side
    18,383.31x = 325,921,210.40
  5. Step 5: Solve for x
    x = 325,921,210.40/18,383.31
  6. Step 6: Final answer
    x = 17,729.19

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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.