Home / 20,970,722,493.20-31,456,083,739.80-18,866,499,568.40

Finding the Fourth Proportional to 20,970,722,493.20, 31,456,083,739.80 and 18,866,499,568.40

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Solution

The fourth proportional to 20,970,722,493.20, 31,456,083,739.80 and 18,866,499,568.40 is: 28,299,749,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970,722,493.20 : 31,456,083,739.80 = 18,866,499,568.40 : x
  2. Step 2: Convert to fraction form
    20,970,722,493.20/31,456,083,739.80 = 18,866,499,568.40/x
  3. Step 3: Cross multiply
    20,970,722,493.20x = 31,456,083,739.80 × 18,866,499,568.40
  4. Step 4: Simplify right side
    20,970,722,493.20x = 593,466,190,300,491,022,336
  5. Step 5: Solve for x
    x = 593,466,190,300,491,022,336/20,970,722,493.20
  6. Step 6: Final answer
    x = 28,299,749,352.60

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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.