Home / 20,419,997.36-28,179,782.52-11,252,968.88

Finding the Fourth Proportional to 20,419,997.36, 28,179,782.52 and 11,252,968.88

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Solution

The fourth proportional to 20,419,997.36, 28,179,782.52 and 11,252,968.88 is: 15,529,199.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419,997.36 : 28,179,782.52 = 11,252,968.88 : x
  2. Step 2: Convert to fraction form
    20,419,997.36/28,179,782.52 = 11,252,968.88/x
  3. Step 3: Cross multiply
    20,419,997.36x = 28,179,782.52 × 11,252,968.88
  4. Step 4: Simplify right side
    20,419,997.36x = 317,106,215,742,728
  5. Step 5: Solve for x
    x = 317,106,215,742,728/20,419,997.36
  6. Step 6: Final answer
    x = 15,529,199.64

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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.