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Finding the Fourth Proportional to 18,454,921.40, 27,682,382.10 and 17,392,039.40

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Solution

The fourth proportional to 18,454,921.40, 27,682,382.10 and 17,392,039.40 is: 26,088,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454,921.40 : 27,682,382.10 = 17,392,039.40 : x
  2. Step 2: Convert to fraction form
    18,454,921.40/27,682,382.10 = 17,392,039.40/x
  3. Step 3: Cross multiply
    18,454,921.40x = 27,682,382.10 × 17,392,039.40
  4. Step 4: Simplify right side
    18,454,921.40x = 481,453,080,169,054.75
  5. Step 5: Solve for x
    x = 481,453,080,169,054.75/18,454,921.40
  6. Step 6: Final answer
    x = 26,088,059.10

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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.