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Finding the Fourth Proportional to 19,721,251.20, 29,525,889.60 and 19,721,251.20

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Solution

The fourth proportional to 19,721,251.20, 29,525,889.60 and 19,721,251.20 is: 29,525,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721,251.20 : 29,525,889.60 = 19,721,251.20 : x
  2. Step 2: Convert to fraction form
    19,721,251.20/29,525,889.60 = 19,721,251.20/x
  3. Step 3: Cross multiply
    19,721,251.20x = 29,525,889.60 × 19,721,251.20
  4. Step 4: Simplify right side
    19,721,251.20x = 582,287,485,705,067.50
  5. Step 5: Solve for x
    x = 582,287,485,705,067.50/19,721,251.20
  6. Step 6: Final answer
    x = 29,525,889.60

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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.