Home / 15,787,029.78-21,786,100.83-8,543,685.78

Finding the Fourth Proportional to 15,787,029.78, 21,786,100.83 and 8,543,685.78

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Solution

The fourth proportional to 15,787,029.78, 21,786,100.83 and 8,543,685.78 is: 11,790,286.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787,029.78 : 21,786,100.83 = 8,543,685.78 : x
  2. Step 2: Convert to fraction form
    15,787,029.78/21,786,100.83 = 8,543,685.78/x
  3. Step 3: Cross multiply
    15,787,029.78x = 21,786,100.83 × 8,543,685.78
  4. Step 4: Simplify right side
    15,787,029.78x = 186,133,599,862,917.16
  5. Step 5: Solve for x
    x = 186,133,599,862,917.16/15,787,029.78
  6. Step 6: Final answer
    x = 11,790,286.23

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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.