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Finding the Fourth Proportional to 22,469,962.87, 31,029,963.87 and 21,245,802.78

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Solution

The fourth proportional to 22,469,962.87, 31,029,963.87 and 21,245,802.78 is: 29,339,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,469,962.87 : 31,029,963.87 = 21,245,802.78 : x
  2. Step 2: Convert to fraction form
    22,469,962.87/31,029,963.87 = 21,245,802.78/x
  3. Step 3: Cross multiply
    22,469,962.87x = 31,029,963.87 × 21,245,802.78
  4. Step 4: Simplify right side
    22,469,962.87x = 659,256,492,473,224
  5. Step 5: Solve for x
    x = 659,256,492,473,224/22,469,962.87
  6. Step 6: Final answer
    x = 29,339,456.24

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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.