Home / 20,881,152,004.80-31,321,728,007.20-12,625,503,441.60

Finding the Fourth Proportional to 20,881,152,004.80, 31,321,728,007.20 and 12,625,503,441.60

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Solution

The fourth proportional to 20,881,152,004.80, 31,321,728,007.20 and 12,625,503,441.60 is: 18,938,255,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,152,004.80 : 31,321,728,007.20 = 12,625,503,441.60 : x
  2. Step 2: Convert to fraction form
    20,881,152,004.80/31,321,728,007.20 = 12,625,503,441.60/x
  3. Step 3: Cross multiply
    20,881,152,004.80x = 31,321,728,007.20 × 12,625,503,441.60
  4. Step 4: Simplify right side
    20,881,152,004.80x = 395,452,584,751,762,702,336
  5. Step 5: Solve for x
    x = 395,452,584,751,762,702,336/20,881,152,004.80
  6. Step 6: Final answer
    x = 18,938,255,162.40

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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.