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Finding the Fourth Proportional to 18,064.92, 27,075.42 and 12,791.82

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Solution

The fourth proportional to 18,064.92, 27,075.42 and 12,791.82 is: 19,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,064.92 : 27,075.42 = 12,791.82 : x
  2. Step 2: Convert to fraction form
    18,064.92/27,075.42 = 12,791.82/x
  3. Step 3: Cross multiply
    18,064.92x = 27,075.42 × 12,791.82
  4. Step 4: Simplify right side
    18,064.92x = 346,343,899.06
  5. Step 5: Solve for x
    x = 346,343,899.06/18,064.92
  6. Step 6: Final answer
    x = 19,172.18

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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.