Home / 21,952,589-30,305,103.64-15,431,808.20

Finding the Fourth Proportional to 21,952,589, 30,305,103.64 and 15,431,808.20

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Solution

The fourth proportional to 21,952,589, 30,305,103.64 and 15,431,808.20 is: 21,303,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952,589 : 30,305,103.64 = 15,431,808.20 : x
  2. Step 2: Convert to fraction form
    21,952,589/30,305,103.64 = 15,431,808.20/x
  3. Step 3: Cross multiply
    21,952,589x = 30,305,103.64 × 15,431,808.20
  4. Step 4: Simplify right side
    21,952,589x = 467,662,546,853,601.81
  5. Step 5: Solve for x
    x = 467,662,546,853,601.81/21,952,589
  6. Step 6: Final answer
    x = 21,303,298.07

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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.