Home / 21,007,222,972.77-28,989,881,033.13-11,361,963,712.89

Finding the Fourth Proportional to 21,007,222,972.77, 28,989,881,033.13 and 11,361,963,712.89

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Solution

The fourth proportional to 21,007,222,972.77, 28,989,881,033.13 and 11,361,963,712.89 is: 15,679,463,047.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007,222,972.77 : 28,989,881,033.13 = 11,361,963,712.89 : x
  2. Step 2: Convert to fraction form
    21,007,222,972.77/28,989,881,033.13 = 11,361,963,712.89/x
  3. Step 3: Cross multiply
    21,007,222,972.77x = 28,989,881,033.13 × 11,361,963,712.89
  4. Step 4: Simplify right side
    21,007,222,972.77x = 329,381,976,339,421,134,848
  5. Step 5: Solve for x
    x = 329,381,976,339,421,134,848/21,007,222,972.77
  6. Step 6: Final answer
    x = 15,679,463,047.85

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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.