Home / 20,862,792,297.60-31,295,700,100.80-12,563,809,641.60

Finding the Fourth Proportional to 20,862,792,297.60, 31,295,700,100.80 and 12,563,809,641.60

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Solution

The fourth proportional to 20,862,792,297.60, 31,295,700,100.80 and 12,563,809,641.60 is: 18,846,624,797.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862,792,297.60 : 31,295,700,100.80 = 12,563,809,641.60 : x
  2. Step 2: Convert to fraction form
    20,862,792,297.60/31,295,700,100.80 = 12,563,809,641.60/x
  3. Step 3: Cross multiply
    20,862,792,297.60x = 31,295,700,100.80 × 12,563,809,641.60
  4. Step 4: Simplify right side
    20,862,792,297.60x = 393,193,218,667,053,121,536
  5. Step 5: Solve for x
    x = 393,193,218,667,053,121,536/20,862,792,297.60
  6. Step 6: Final answer
    x = 18,846,624,797.79

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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.