Home / 21,307,383,876.47-31,968,173,869.07-7,143,751,147.55

Finding the Fourth Proportional to 21,307,383,876.47, 31,968,173,869.07 and 7,143,751,147.55

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Solution

The fourth proportional to 21,307,383,876.47, 31,968,173,869.07 and 7,143,751,147.55 is: 10,718,006,494.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307,383,876.47 : 31,968,173,869.07 = 7,143,751,147.55 : x
  2. Step 2: Convert to fraction form
    21,307,383,876.47/31,968,173,869.07 = 7,143,751,147.55/x
  3. Step 3: Cross multiply
    21,307,383,876.47x = 31,968,173,869.07 × 7,143,751,147.55
  4. Step 4: Simplify right side
    21,307,383,876.47x = 228,372,678,762,051,174,400
  5. Step 5: Solve for x
    x = 228,372,678,762,051,174,400/21,307,383,876.47
  6. Step 6: Final answer
    x = 10,718,006,494.19

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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.