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Finding the Fourth Proportional to 17,707,643.20, 26,561,464.80 and 8,731,028.80

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Solution

The fourth proportional to 17,707,643.20, 26,561,464.80 and 8,731,028.80 is: 13,096,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,707,643.20 : 26,561,464.80 = 8,731,028.80 : x
  2. Step 2: Convert to fraction form
    17,707,643.20/26,561,464.80 = 8,731,028.80/x
  3. Step 3: Cross multiply
    17,707,643.20x = 26,561,464.80 × 8,731,028.80
  4. Step 4: Simplify right side
    17,707,643.20x = 231,908,914,138,986.28
  5. Step 5: Solve for x
    x = 231,908,914,138,986.28/17,707,643.20
  6. Step 6: Final answer
    x = 13,096,543.20

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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.