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Finding the Fourth Proportional to 15,785,800, 21,784,404.04 and 8,542,456

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Solution

The fourth proportional to 15,785,800, 21,784,404.04 and 8,542,456 is: 11,788,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785,800 : 21,784,404.04 = 8,542,456 : x
  2. Step 2: Convert to fraction form
    15,785,800/21,784,404.04 = 8,542,456/x
  3. Step 3: Cross multiply
    15,785,800x = 21,784,404.04 × 8,542,456
  4. Step 4: Simplify right side
    15,785,800x = 186,092,312,997,922.22
  5. Step 5: Solve for x
    x = 186,092,312,997,922.22/15,785,800
  6. Step 6: Final answer
    x = 11,788,589.30

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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.