Home / 18,947,111-28,409,787.44-7,419,080.92

Finding the Fourth Proportional to 18,947,111, 28,409,787.44 and 7,419,080.92

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Solution

The fourth proportional to 18,947,111, 28,409,787.44 and 7,419,080.92 is: 11,124,361.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,111 : 28,409,787.44 = 7,419,080.92 : x
  2. Step 2: Convert to fraction form
    18,947,111/28,409,787.44 = 7,419,080.92/x
  3. Step 3: Cross multiply
    18,947,111x = 28,409,787.44 × 7,419,080.92
  4. Step 4: Simplify right side
    18,947,111x = 210,774,511,937,359.66
  5. Step 5: Solve for x
    x = 210,774,511,937,359.66/18,947,111
  6. Step 6: Final answer
    x = 11,124,361.49

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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.