Home / 12,129,935.50-16,725,664.11-9,917,896.78

Finding the Fourth Proportional to 12,129,935.50, 16,725,664.11 and 9,917,896.78

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Solution

The fourth proportional to 12,129,935.50, 16,725,664.11 and 9,917,896.78 is: 13,675,539.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,935.50 : 16,725,664.11 = 9,917,896.78 : x
  2. Step 2: Convert to fraction form
    12,129,935.50/16,725,664.11 = 9,917,896.78/x
  3. Step 3: Cross multiply
    12,129,935.50x = 16,725,664.11 × 9,917,896.78
  4. Step 4: Simplify right side
    12,129,935.50x = 165,883,410,219,930.56
  5. Step 5: Solve for x
    x = 165,883,410,219,930.56/12,129,935.50
  6. Step 6: Final answer
    x = 13,675,539.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.