Home / 21,972,546-30,322,477.98-12,183,402.78

Finding the Fourth Proportional to 21,972,546, 30,322,477.98 and 12,183,402.78

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Solution

The fourth proportional to 21,972,546, 30,322,477.98 and 12,183,402.78 is: 16,813,297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972,546 : 30,322,477.98 = 12,183,402.78 : x
  2. Step 2: Convert to fraction form
    21,972,546/30,322,477.98 = 12,183,402.78/x
  3. Step 3: Cross multiply
    21,972,546x = 30,322,477.98 × 12,183,402.78
  4. Step 4: Simplify right side
    21,972,546x = 369,430,962,518,020.75
  5. Step 5: Solve for x
    x = 369,430,962,518,020.75/21,972,546
  6. Step 6: Final answer
    x = 16,813,297.95

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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.