Home / 20,968,153.72-28,936,983.18-11,801,390.20

Finding the Fourth Proportional to 20,968,153.72, 28,936,983.18 and 11,801,390.20

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Solution

The fourth proportional to 20,968,153.72, 28,936,983.18 and 11,801,390.20 is: 16,286,442.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968,153.72 : 28,936,983.18 = 11,801,390.20 : x
  2. Step 2: Convert to fraction form
    20,968,153.72/28,936,983.18 = 11,801,390.20/x
  3. Step 3: Cross multiply
    20,968,153.72x = 28,936,983.18 × 11,801,390.20
  4. Step 4: Simplify right side
    20,968,153.72x = 341,496,629,718,016.81
  5. Step 5: Solve for x
    x = 341,496,629,718,016.81/20,968,153.72
  6. Step 6: Final answer
    x = 16,286,442.49

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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.