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Finding the Fourth Proportional to 12,682,486.83, 19,023,507.60 and 8,788,352.91

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Solution

The fourth proportional to 12,682,486.83, 19,023,507.60 and 8,788,352.91 is: 13,182,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682,486.83 : 19,023,507.60 = 8,788,352.91 : x
  2. Step 2: Convert to fraction form
    12,682,486.83/19,023,507.60 = 8,788,352.91/x
  3. Step 3: Cross multiply
    12,682,486.83x = 19,023,507.60 × 8,788,352.91
  4. Step 4: Simplify right side
    12,682,486.83x = 167,185,298,374,867.12
  5. Step 5: Solve for x
    x = 167,185,298,374,867.12/12,682,486.83
  6. Step 6: Final answer
    x = 13,182,375.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.