Home / 21,399,016.02-29,530,638.63-12,231,855.60

Finding the Fourth Proportional to 21,399,016.02, 29,530,638.63 and 12,231,855.60

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Solution

The fourth proportional to 21,399,016.02, 29,530,638.63 and 12,231,855.60 is: 16,879,958.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399,016.02 : 29,530,638.63 = 12,231,855.60 : x
  2. Step 2: Convert to fraction form
    21,399,016.02/29,530,638.63 = 12,231,855.60/x
  3. Step 3: Cross multiply
    21,399,016.02x = 29,530,638.63 × 12,231,855.60
  4. Step 4: Simplify right side
    21,399,016.02x = 361,214,507,497,941.81
  5. Step 5: Solve for x
    x = 361,214,507,497,941.81/21,399,016.02
  6. Step 6: Final answer
    x = 16,879,958.74

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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.