Home / 21,007,222,971.27-28,989,881,031.06-11,361,963,711.39

Finding the Fourth Proportional to 21,007,222,971.27, 28,989,881,031.06 and 11,361,963,711.39

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Solution

The fourth proportional to 21,007,222,971.27, 28,989,881,031.06 and 11,361,963,711.39 is: 15,679,463,045.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007,222,971.27 : 28,989,881,031.06 = 11,361,963,711.39 : x
  2. Step 2: Convert to fraction form
    21,007,222,971.27/28,989,881,031.06 = 11,361,963,711.39/x
  3. Step 3: Cross multiply
    21,007,222,971.27x = 28,989,881,031.06 × 11,361,963,711.39
  4. Step 4: Simplify right side
    21,007,222,971.27x = 329,381,976,272,417,062,912
  5. Step 5: Solve for x
    x = 329,381,976,272,417,062,912/21,007,222,971.27
  6. Step 6: Final answer
    x = 15,679,463,045.78

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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.