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Finding the Fourth Proportional to 19,485, 26,891.93 and 10,988.87

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Solution

The fourth proportional to 19,485, 26,891.93 and 10,988.87 is: 15,166.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485 : 26,891.93 = 10,988.87 : x
  2. Step 2: Convert to fraction form
    19,485/26,891.93 = 10,988.87/x
  3. Step 3: Cross multiply
    19,485x = 26,891.93 × 10,988.87
  4. Step 4: Simplify right side
    19,485x = 295,511,815.83
  5. Step 5: Solve for x
    x = 295,511,815.83/19,485
  6. Step 6: Final answer
    x = 15,166.12

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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.