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Finding the Fourth Proportional to 13,262,810.80, 19,904,713.80 and 5,179,658.80

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Solution

The fourth proportional to 13,262,810.80, 19,904,713.80 and 5,179,658.80 is: 7,773,587.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,262,810.80 : 19,904,713.80 = 5,179,658.80 : x
  2. Step 2: Convert to fraction form
    13,262,810.80/19,904,713.80 = 5,179,658.80/x
  3. Step 3: Cross multiply
    13,262,810.80x = 19,904,713.80 × 5,179,658.80
  4. Step 4: Simplify right side
    13,262,810.80x = 103,099,625,995,651.44
  5. Step 5: Solve for x
    x = 103,099,625,995,651.44/13,262,810.80
  6. Step 6: Final answer
    x = 7,773,587.93

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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.