Home / 12,949,120.80-17,869,790.28-7,147,906.32

Finding the Fourth Proportional to 12,949,120.80, 17,869,790.28 and 7,147,906.32

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Solution

The fourth proportional to 12,949,120.80, 17,869,790.28 and 7,147,906.32 is: 9,864,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949,120.80 : 17,869,790.28 = 7,147,906.32 : x
  2. Step 2: Convert to fraction form
    12,949,120.80/17,869,790.28 = 7,147,906.32/x
  3. Step 3: Cross multiply
    12,949,120.80x = 17,869,790.28 × 7,147,906.32
  4. Step 4: Simplify right side
    12,949,120.80x = 127,731,586,879,486.58
  5. Step 5: Solve for x
    x = 127,731,586,879,486.58/12,949,120.80
  6. Step 6: Final answer
    x = 9,864,112.70

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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.