Home / 21,278,991-29,365,040.40-12,111,633.75

Finding the Fourth Proportional to 21,278,991, 29,365,040.40 and 12,111,633.75

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Solution

The fourth proportional to 21,278,991, 29,365,040.40 and 12,111,633.75 is: 16,714,073.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,991 : 29,365,040.40 = 12,111,633.75 : x
  2. Step 2: Convert to fraction form
    21,278,991/29,365,040.40 = 12,111,633.75/x
  3. Step 3: Cross multiply
    21,278,991x = 29,365,040.40 × 12,111,633.75
  4. Step 4: Simplify right side
    21,278,991x = 355,658,614,378,753.50
  5. Step 5: Solve for x
    x = 355,658,614,378,753.50/21,278,991
  6. Step 6: Final answer
    x = 16,714,073.26

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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.