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Finding the Fourth Proportional to 18,449.19, 27,673.68 and 7,918.32

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Solution

The fourth proportional to 18,449.19, 27,673.68 and 7,918.32 is: 11,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.19 : 27,673.68 = 7,918.32 : x
  2. Step 2: Convert to fraction form
    18,449.19/27,673.68 = 7,918.32/x
  3. Step 3: Cross multiply
    18,449.19x = 27,673.68 × 7,918.32
  4. Step 4: Simplify right side
    18,449.19x = 219,129,053.82
  5. Step 5: Solve for x
    x = 219,129,053.82/18,449.19
  6. Step 6: Final answer
    x = 11,877.43

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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.