Home / 21,795.18-30,080.07-12,366.78

Finding the Fourth Proportional to 21,795.18, 30,080.07 and 12,366.78

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Solution

The fourth proportional to 21,795.18, 30,080.07 and 12,366.78 is: 17,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.18 : 30,080.07 = 12,366.78 : x
  2. Step 2: Convert to fraction form
    21,795.18/30,080.07 = 12,366.78/x
  3. Step 3: Cross multiply
    21,795.18x = 30,080.07 × 12,366.78
  4. Step 4: Simplify right side
    21,795.18x = 371,993,608.07
  5. Step 5: Solve for x
    x = 371,993,608.07/21,795.18
  6. Step 6: Final answer
    x = 17,067.70

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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.