Home / 13,180,997.85-18,189,573.89-7,379,987.18

Finding the Fourth Proportional to 13,180,997.85, 18,189,573.89 and 7,379,987.18

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Solution

The fourth proportional to 13,180,997.85, 18,189,573.89 and 7,379,987.18 is: 10,184,268.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180,997.85 : 18,189,573.89 = 7,379,987.18 : x
  2. Step 2: Convert to fraction form
    13,180,997.85/18,189,573.89 = 7,379,987.18/x
  3. Step 3: Cross multiply
    13,180,997.85x = 18,189,573.89 × 7,379,987.18
  4. Step 4: Simplify right side
    13,180,997.85x = 134,238,821,990,014.94
  5. Step 5: Solve for x
    x = 134,238,821,990,014.94/13,180,997.85
  6. Step 6: Final answer
    x = 10,184,268.56

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1.5x scale

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.