Home / 18,394,988,210.85-25,389,806,874.81-11,980,791,790.45

Finding the Fourth Proportional to 18,394,988,210.85, 25,389,806,874.81 and 11,980,791,790.45

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Solution

The fourth proportional to 18,394,988,210.85, 25,389,806,874.81 and 11,980,791,790.45 is: 16,536,568,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394,988,210.85 : 25,389,806,874.81 = 11,980,791,790.45 : x
  2. Step 2: Convert to fraction form
    18,394,988,210.85/25,389,806,874.81 = 11,980,791,790.45/x
  3. Step 3: Cross multiply
    18,394,988,210.85x = 25,389,806,874.81 × 11,980,791,790.45
  4. Step 4: Simplify right side
    18,394,988,210.85x = 304,189,989,766,834,683,904
  5. Step 5: Solve for x
    x = 304,189,989,766,834,683,904/18,394,988,210.85
  6. Step 6: Final answer
    x = 16,536,568,889.31

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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.