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Finding the Fourth Proportional to 17,387,857.40, 26,081,786.10 and 13,804,676.60

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Solution

The fourth proportional to 17,387,857.40, 26,081,786.10 and 13,804,676.60 is: 20,707,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,387,857.40 : 26,081,786.10 = 13,804,676.60 : x
  2. Step 2: Convert to fraction form
    17,387,857.40/26,081,786.10 = 13,804,676.60/x
  3. Step 3: Cross multiply
    17,387,857.40x = 26,081,786.10 × 13,804,676.60
  4. Step 4: Simplify right side
    17,387,857.40x = 360,050,622,260,875.25
  5. Step 5: Solve for x
    x = 360,050,622,260,875.25/17,387,857.40
  6. Step 6: Final answer
    x = 20,707,014.90

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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.