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Finding the Fourth Proportional to 19,640,404.80, 29,410,840.80 and 15,659,092.80

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Solution

The fourth proportional to 19,640,404.80, 29,410,840.80 and 15,659,092.80 is: 23,448,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640,404.80 : 29,410,840.80 = 15,659,092.80 : x
  2. Step 2: Convert to fraction form
    19,640,404.80/29,410,840.80 = 15,659,092.80/x
  3. Step 3: Cross multiply
    19,640,404.80x = 29,410,840.80 × 15,659,092.80
  4. Step 4: Simplify right side
    19,640,404.80x = 460,547,085,413,226.25
  5. Step 5: Solve for x
    x = 460,547,085,413,226.25/19,640,404.80
  6. Step 6: Final answer
    x = 23,448,960.96

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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.