Home / 13,290,697.13-18,341,169.41-7,179,125.69

Finding the Fourth Proportional to 13,290,697.13, 18,341,169.41 and 7,179,125.69

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Solution

The fourth proportional to 13,290,697.13, 18,341,169.41 and 7,179,125.69 is: 9,907,197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,697.13 : 18,341,169.41 = 7,179,125.69 : x
  2. Step 2: Convert to fraction form
    13,290,697.13/18,341,169.41 = 7,179,125.69/x
  3. Step 3: Cross multiply
    13,290,697.13x = 18,341,169.41 × 7,179,125.69
  4. Step 4: Simplify right side
    13,290,697.13x = 131,673,560,422,215.11
  5. Step 5: Solve for x
    x = 131,673,560,422,215.11/13,290,697.13
  6. Step 6: Final answer
    x = 9,907,197.43

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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.