Home / 20,831,231,936.32-28,747,890,300.74-11,675,929,989.42

Finding the Fourth Proportional to 20,831,231,936.32, 28,747,890,300.74 and 11,675,929,989.42

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Solution

The fourth proportional to 20,831,231,936.32, 28,747,890,300.74 and 11,675,929,989.42 is: 16,113,226,309.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,231,936.32 : 28,747,890,300.74 = 11,675,929,989.42 : x
  2. Step 2: Convert to fraction form
    20,831,231,936.32/28,747,890,300.74 = 11,675,929,989.42/x
  3. Step 3: Cross multiply
    20,831,231,936.32x = 28,747,890,300.74 × 11,675,929,989.42
  4. Step 4: Simplify right side
    20,831,231,936.32x = 335,658,354,494,908,137,472
  5. Step 5: Solve for x
    x = 335,658,354,494,908,137,472/20,831,231,936.32
  6. Step 6: Final answer
    x = 16,113,226,309.47

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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.