Home / 21,709,198.96-29,958,717.18-12,890,410.36

Finding the Fourth Proportional to 21,709,198.96, 29,958,717.18 and 12,890,410.36

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Solution

The fourth proportional to 21,709,198.96, 29,958,717.18 and 12,890,410.36 is: 17,788,779.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709,198.96 : 29,958,717.18 = 12,890,410.36 : x
  2. Step 2: Convert to fraction form
    21,709,198.96/29,958,717.18 = 12,890,410.36/x
  3. Step 3: Cross multiply
    21,709,198.96x = 29,958,717.18 × 12,890,410.36
  4. Step 4: Simplify right side
    21,709,198.96x = 386,180,158,309,381.94
  5. Step 5: Solve for x
    x = 386,180,158,309,381.94/21,709,198.96
  6. Step 6: Final answer
    x = 17,788,779.73

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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.