Home / 21,107,970,396.71-31,667,314,822.15-9,771,320,476.52

Finding the Fourth Proportional to 21,107,970,396.71, 31,667,314,822.15 and 9,771,320,476.52

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Solution

The fourth proportional to 21,107,970,396.71, 31,667,314,822.15 and 9,771,320,476.52 is: 14,659,461,612.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107,970,396.71 : 31,667,314,822.15 = 9,771,320,476.52 : x
  2. Step 2: Convert to fraction form
    21,107,970,396.71/31,667,314,822.15 = 9,771,320,476.52/x
  3. Step 3: Cross multiply
    21,107,970,396.71x = 31,667,314,822.15 × 9,771,320,476.52
  4. Step 4: Simplify right side
    21,107,970,396.71x = 309,431,481,757,891,952,640
  5. Step 5: Solve for x
    x = 309,431,481,757,891,952,640/21,107,970,396.71
  6. Step 6: Final answer
    x = 14,659,461,612.96

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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.