Home / 21,007,222,972.27-28,989,881,032.44-11,361,963,712.39

Finding the Fourth Proportional to 21,007,222,972.27, 28,989,881,032.44 and 11,361,963,712.39

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Solution

The fourth proportional to 21,007,222,972.27, 28,989,881,032.44 and 11,361,963,712.39 is: 15,679,463,047.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007,222,972.27 : 28,989,881,032.44 = 11,361,963,712.39 : x
  2. Step 2: Convert to fraction form
    21,007,222,972.27/28,989,881,032.44 = 11,361,963,712.39/x
  3. Step 3: Cross multiply
    21,007,222,972.27x = 28,989,881,032.44 × 11,361,963,712.39
  4. Step 4: Simplify right side
    21,007,222,972.27x = 329,381,976,317,086,400,512
  5. Step 5: Solve for x
    x = 329,381,976,317,086,400,512/21,007,222,972.27
  6. Step 6: Final answer
    x = 15,679,463,047.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.