Home / 21,400,257.60-29,526,642.72-12,691,189.44

Finding the Fourth Proportional to 21,400,257.60, 29,526,642.72 and 12,691,189.44

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Solution

The fourth proportional to 21,400,257.60, 29,526,642.72 and 12,691,189.44 is: 17,510,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400,257.60 : 29,526,642.72 = 12,691,189.44 : x
  2. Step 2: Convert to fraction form
    21,400,257.60/29,526,642.72 = 12,691,189.44/x
  3. Step 3: Cross multiply
    21,400,257.60x = 29,526,642.72 × 12,691,189.44
  4. Step 4: Simplify right side
    21,400,257.60x = 374,728,216,286,716.88
  5. Step 5: Solve for x
    x = 374,728,216,286,716.88/21,400,257.60
  6. Step 6: Final answer
    x = 17,510,453.53

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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.