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Finding the Fourth Proportional to 13,205,080.80, 19,807,621.20 and 13,205,080.80

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Solution

The fourth proportional to 13,205,080.80, 19,807,621.20 and 13,205,080.80 is: 19,807,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205,080.80 : 19,807,621.20 = 13,205,080.80 : x
  2. Step 2: Convert to fraction form
    13,205,080.80/19,807,621.20 = 13,205,080.80/x
  3. Step 3: Cross multiply
    13,205,080.80x = 19,807,621.20 × 13,205,080.80
  4. Step 4: Simplify right side
    13,205,080.80x = 261,561,238,401,792.97
  5. Step 5: Solve for x
    x = 261,561,238,401,792.97/13,205,080.80
  6. Step 6: Final answer
    x = 19,807,621.20

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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.