Home / 13,121,245.96-18,107,327.13-7,320,027.72

Finding the Fourth Proportional to 13,121,245.96, 18,107,327.13 and 7,320,027.72

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Solution

The fourth proportional to 13,121,245.96, 18,107,327.13 and 7,320,027.72 is: 10,101,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,245.96 : 18,107,327.13 = 7,320,027.72 : x
  2. Step 2: Convert to fraction form
    13,121,245.96/18,107,327.13 = 7,320,027.72/x
  3. Step 3: Cross multiply
    13,121,245.96x = 18,107,327.13 × 7,320,027.72
  4. Step 4: Simplify right side
    13,121,245.96x = 132,546,136,526,708.03
  5. Step 5: Solve for x
    x = 132,546,136,526,708.03/13,121,245.96
  6. Step 6: Final answer
    x = 10,101,642.55

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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.