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Finding the Fourth Proportional to 12,415,895.88, 18,740,469.77 and 12,415,895.88

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Solution

The fourth proportional to 12,415,895.88, 18,740,469.77 and 12,415,895.88 is: 18,740,469.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415,895.88 : 18,740,469.77 = 12,415,895.88 : x
  2. Step 2: Convert to fraction form
    12,415,895.88/18,740,469.77 = 12,415,895.88/x
  3. Step 3: Cross multiply
    12,415,895.88x = 18,740,469.77 × 12,415,895.88
  4. Step 4: Simplify right side
    12,415,895.88x = 232,679,721,344,528.09
  5. Step 5: Solve for x
    x = 232,679,721,344,528.09/12,415,895.88
  6. Step 6: Final answer
    x = 18,740,469.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.