Home / 20,644,989.21-28,491,900.66-11,354,196.26

Finding the Fourth Proportional to 20,644,989.21, 28,491,900.66 and 11,354,196.26

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Solution

The fourth proportional to 20,644,989.21, 28,491,900.66 and 11,354,196.26 is: 15,669,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644,989.21 : 28,491,900.66 = 11,354,196.26 : x
  2. Step 2: Convert to fraction form
    20,644,989.21/28,491,900.66 = 11,354,196.26/x
  3. Step 3: Cross multiply
    20,644,989.21x = 28,491,900.66 × 11,354,196.26
  4. Step 4: Simplify right side
    20,644,989.21x = 323,502,631,985,293.25
  5. Step 5: Solve for x
    x = 323,502,631,985,293.25/20,644,989.21
  6. Step 6: Final answer
    x = 15,669,789.35

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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.