Home / 20,728,005.17-31,095,992.95-7,947,513.18

Finding the Fourth Proportional to 20,728,005.17, 31,095,992.95 and 7,947,513.18

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Solution

The fourth proportional to 20,728,005.17, 31,095,992.95 and 7,947,513.18 is: 11,922,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,005.17 : 31,095,992.95 = 7,947,513.18 : x
  2. Step 2: Convert to fraction form
    20,728,005.17/31,095,992.95 = 7,947,513.18/x
  3. Step 3: Cross multiply
    20,728,005.17x = 31,095,992.95 × 7,947,513.18
  4. Step 4: Simplify right side
    20,728,005.17x = 247,135,813,795,443.31
  5. Step 5: Solve for x
    x = 247,135,813,795,443.31/20,728,005.17
  6. Step 6: Final answer
    x = 11,922,797.77

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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.