Home / 21,405,309.45-29,539,103.00-11,986,119.15

Finding the Fourth Proportional to 21,405,309.45, 29,539,103.00 and 11,986,119.15

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Solution

The fourth proportional to 21,405,309.45, 29,539,103.00 and 11,986,119.15 is: 16,540,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405,309.45 : 29,539,103.00 = 11,986,119.15 : x
  2. Step 2: Convert to fraction form
    21,405,309.45/29,539,103.00 = 11,986,119.15/x
  3. Step 3: Cross multiply
    21,405,309.45x = 29,539,103.00 × 11,986,119.15
  4. Step 4: Simplify right side
    21,405,309.45x = 354,059,208,082,191.88
  5. Step 5: Solve for x
    x = 354,059,208,082,191.88/21,405,309.45
  6. Step 6: Final answer
    x = 16,540,718.97

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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.