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Finding the Fourth Proportional to 13,027,804.12, 17,978,303.46 and 7,226,525.80

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Solution

The fourth proportional to 13,027,804.12, 17,978,303.46 and 7,226,525.80 is: 9,972,568.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,027,804.12 : 17,978,303.46 = 7,226,525.80 : x
  2. Step 2: Convert to fraction form
    13,027,804.12/17,978,303.46 = 7,226,525.80/x
  3. Step 3: Cross multiply
    13,027,804.12x = 17,978,303.46 × 7,226,525.80
  4. Step 4: Simplify right side
    13,027,804.12x = 129,920,673,793,919.27
  5. Step 5: Solve for x
    x = 129,920,673,793,919.27/13,027,804.12
  6. Step 6: Final answer
    x = 9,972,568.87

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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.