Home / 20,987,145.16-31,481,844.05-6,611,338.06

Finding the Fourth Proportional to 20,987,145.16, 31,481,844.05 and 6,611,338.06

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Solution

The fourth proportional to 20,987,145.16, 31,481,844.05 and 6,611,338.06 is: 9,917,361.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987,145.16 : 31,481,844.05 = 6,611,338.06 : x
  2. Step 2: Convert to fraction form
    20,987,145.16/31,481,844.05 = 6,611,338.06/x
  3. Step 3: Cross multiply
    20,987,145.16x = 31,481,844.05 × 6,611,338.06
  4. Step 4: Simplify right side
    20,987,145.16x = 208,137,113,766,749.53
  5. Step 5: Solve for x
    x = 208,137,113,766,749.53/20,987,145.16
  6. Step 6: Final answer
    x = 9,917,361.90

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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.