Home / 20,957,322,081.60-31,435,983,122.40-12,589,039,519.20

Finding the Fourth Proportional to 20,957,322,081.60, 31,435,983,122.40 and 12,589,039,519.20

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Solution

The fourth proportional to 20,957,322,081.60, 31,435,983,122.40 and 12,589,039,519.20 is: 18,883,559,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957,322,081.60 : 31,435,983,122.40 = 12,589,039,519.20 : x
  2. Step 2: Convert to fraction form
    20,957,322,081.60/31,435,983,122.40 = 12,589,039,519.20/x
  3. Step 3: Cross multiply
    20,957,322,081.60x = 31,435,983,122.40 × 12,589,039,519.20
  4. Step 4: Simplify right side
    20,957,322,081.60x = 395,748,833,852,797,878,272
  5. Step 5: Solve for x
    x = 395,748,833,852,797,878,272/20,957,322,081.60
  6. Step 6: Final answer
    x = 18,883,559,278.80

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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.