Home / 20,431,403.88-28,194,487.62-11,138,772.84

Finding the Fourth Proportional to 20,431,403.88, 28,194,487.62 and 11,138,772.84

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Solution

The fourth proportional to 20,431,403.88, 28,194,487.62 and 11,138,772.84 is: 15,371,043.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431,403.88 : 28,194,487.62 = 11,138,772.84 : x
  2. Step 2: Convert to fraction form
    20,431,403.88/28,194,487.62 = 11,138,772.84/x
  3. Step 3: Cross multiply
    20,431,403.88x = 28,194,487.62 × 11,138,772.84
  4. Step 4: Simplify right side
    20,431,403.88x = 314,051,992,939,372.25
  5. Step 5: Solve for x
    x = 314,051,992,939,372.25/20,431,403.88
  6. Step 6: Final answer
    x = 15,371,043.26

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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.