Home / 21,015,132,550.80-31,501,907,530.20-9,954,207,315.60

Finding the Fourth Proportional to 21,015,132,550.80, 31,501,907,530.20 and 9,954,207,315.60

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Solution

The fourth proportional to 21,015,132,550.80, 31,501,907,530.20 and 9,954,207,315.60 is: 14,921,462,790.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015,132,550.80 : 31,501,907,530.20 = 9,954,207,315.60 : x
  2. Step 2: Convert to fraction form
    21,015,132,550.80/31,501,907,530.20 = 9,954,207,315.60/x
  3. Step 3: Cross multiply
    21,015,132,550.80x = 31,501,907,530.20 × 9,954,207,315.60
  4. Step 4: Simplify right side
    21,015,132,550.80x = 313,576,518,392,471,617,536
  5. Step 5: Solve for x
    x = 313,576,518,392,471,617,536/21,015,132,550.80
  6. Step 6: Final answer
    x = 14,921,462,790.42

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1.5x scale

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.