Home / 21,307,383,884.65-31,968,173,881.35-7,143,751,155.73

Finding the Fourth Proportional to 21,307,383,884.65, 31,968,173,881.35 and 7,143,751,155.73

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Solution

The fourth proportional to 21,307,383,884.65, 31,968,173,881.35 and 7,143,751,155.73 is: 10,718,006,506.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307,383,884.65 : 31,968,173,881.35 = 7,143,751,155.73 : x
  2. Step 2: Convert to fraction form
    21,307,383,884.65/31,968,173,881.35 = 7,143,751,155.73/x
  3. Step 3: Cross multiply
    21,307,383,884.65x = 31,968,173,881.35 × 7,143,751,155.73
  4. Step 4: Simplify right side
    21,307,383,884.65x = 228,372,679,111,471,628,288
  5. Step 5: Solve for x
    x = 228,372,679,111,471,628,288/21,307,383,884.65
  6. Step 6: Final answer
    x = 10,718,006,506.47

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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.