Home / 20,212,939.12-30,335,131.29-14,108,010.67

Finding the Fourth Proportional to 20,212,939.12, 30,335,131.29 and 14,108,010.67

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Solution

The fourth proportional to 20,212,939.12, 30,335,131.29 and 14,108,010.67 is: 21,172,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212,939.12 : 30,335,131.29 = 14,108,010.67 : x
  2. Step 2: Convert to fraction form
    20,212,939.12/30,335,131.29 = 14,108,010.67/x
  3. Step 3: Cross multiply
    20,212,939.12x = 30,335,131.29 × 14,108,010.67
  4. Step 4: Simplify right side
    20,212,939.12x = 427,968,355,915,170.88
  5. Step 5: Solve for x
    x = 427,968,355,915,170.88/20,212,939.12
  6. Step 6: Final answer
    x = 21,172,989.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.