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Finding the Fourth Proportional to 18,173.51, 25,075.77 and 10,618.38

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Solution

The fourth proportional to 18,173.51, 25,075.77 and 10,618.38 is: 14,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,173.51 : 25,075.77 = 10,618.38 : x
  2. Step 2: Convert to fraction form
    18,173.51/25,075.77 = 10,618.38/x
  3. Step 3: Cross multiply
    18,173.51x = 25,075.77 × 10,618.38
  4. Step 4: Simplify right side
    18,173.51x = 266,264,054.65
  5. Step 5: Solve for x
    x = 266,264,054.65/18,173.51
  6. Step 6: Final answer
    x = 14,651.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.