Home / 21,107,970,390-31,667,314,812.12-9,771,320,469.82

Finding the Fourth Proportional to 21,107,970,390, 31,667,314,812.12 and 9,771,320,469.82

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Solution

The fourth proportional to 21,107,970,390, 31,667,314,812.12 and 9,771,320,469.82 is: 14,659,461,602.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107,970,390 : 31,667,314,812.12 = 9,771,320,469.82 : x
  2. Step 2: Convert to fraction form
    21,107,970,390/31,667,314,812.12 = 9,771,320,469.82/x
  3. Step 3: Cross multiply
    21,107,970,390x = 31,667,314,812.12 × 9,771,320,469.82
  4. Step 4: Simplify right side
    21,107,970,390x = 309,431,481,447,902,216,192
  5. Step 5: Solve for x
    x = 309,431,481,447,902,216,192/21,107,970,390
  6. Step 6: Final answer
    x = 14,659,461,602.93

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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.