Home / 21,215,235,404.60-31,814,097,611.88-7,241,982,789.80

Finding the Fourth Proportional to 21,215,235,404.60, 31,814,097,611.88 and 7,241,982,789.80

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Solution

The fourth proportional to 21,215,235,404.60, 31,814,097,611.88 and 7,241,982,789.80 is: 10,859,985,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215,235,404.60 : 31,814,097,611.88 = 7,241,982,789.80 : x
  2. Step 2: Convert to fraction form
    21,215,235,404.60/31,814,097,611.88 = 7,241,982,789.80/x
  3. Step 3: Cross multiply
    21,215,235,404.60x = 31,814,097,611.88 × 7,241,982,789.80
  4. Step 4: Simplify right side
    21,215,235,404.60x = 230,397,147,378,252,251,136
  5. Step 5: Solve for x
    x = 230,397,147,378,252,251,136/21,215,235,404.60
  6. Step 6: Final answer
    x = 10,859,985,429.54

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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.