Home / 21,275,137,912.40-31,912,706,868.60-9,665,632,120.40

Finding the Fourth Proportional to 21,275,137,912.40, 31,912,706,868.60 and 9,665,632,120.40

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Solution

The fourth proportional to 21,275,137,912.40, 31,912,706,868.60 and 9,665,632,120.40 is: 14,498,448,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,137,912.40 : 31,912,706,868.60 = 9,665,632,120.40 : x
  2. Step 2: Convert to fraction form
    21,275,137,912.40/31,912,706,868.60 = 9,665,632,120.40/x
  3. Step 3: Cross multiply
    21,275,137,912.40x = 31,912,706,868.60 × 9,665,632,120.40
  4. Step 4: Simplify right side
    21,275,137,912.40x = 308,456,484,558,049,837,056
  5. Step 5: Solve for x
    x = 308,456,484,558,049,837,056/21,275,137,912.40
  6. Step 6: Final answer
    x = 14,498,448,180.60

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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.