Home / 20,522,221.20-30,763,027.80-9,720,536.40

Finding the Fourth Proportional to 20,522,221.20, 30,763,027.80 and 9,720,536.40

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Solution

The fourth proportional to 20,522,221.20, 30,763,027.80 and 9,720,536.40 is: 14,571,187.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522,221.20 : 30,763,027.80 = 9,720,536.40 : x
  2. Step 2: Convert to fraction form
    20,522,221.20/30,763,027.80 = 9,720,536.40/x
  3. Step 3: Cross multiply
    20,522,221.20x = 30,763,027.80 × 9,720,536.40
  4. Step 4: Simplify right side
    20,522,221.20x = 299,033,131,504,111.94
  5. Step 5: Solve for x
    x = 299,033,131,504,111.94/20,522,221.20
  6. Step 6: Final answer
    x = 14,571,187.43

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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.