Home / 20,970,065,286.80-28,938,688,988.92-11,324,794,328.02

Finding the Fourth Proportional to 20,970,065,286.80, 28,938,688,988.92 and 11,324,794,328.02

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Solution

The fourth proportional to 20,970,065,286.80, 28,938,688,988.92 and 11,324,794,328.02 is: 15,628,215,574.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970,065,286.80 : 28,938,688,988.92 = 11,324,794,328.02 : x
  2. Step 2: Convert to fraction form
    20,970,065,286.80/28,938,688,988.92 = 11,324,794,328.02/x
  3. Step 3: Cross multiply
    20,970,065,286.80x = 28,938,688,988.92 × 11,324,794,328.02
  4. Step 4: Simplify right side
    20,970,065,286.80x = 327,724,700,922,056,015,872
  5. Step 5: Solve for x
    x = 327,724,700,922,056,015,872/20,970,065,286.80
  6. Step 6: Final answer
    x = 15,628,215,574.91

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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.