Home / 21,212,100.66-31,840,415.37-18,798,694.22

Finding the Fourth Proportional to 21,212,100.66, 31,840,415.37 and 18,798,694.22

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Solution

The fourth proportional to 21,212,100.66, 31,840,415.37 and 18,798,694.22 is: 28,217,772.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,100.66 : 31,840,415.37 = 18,798,694.22 : x
  2. Step 2: Convert to fraction form
    21,212,100.66/31,840,415.37 = 18,798,694.22/x
  3. Step 3: Cross multiply
    21,212,100.66x = 31,840,415.37 × 18,798,694.22
  4. Step 4: Simplify right side
    21,212,100.66x = 598,558,232,421,314
  5. Step 5: Solve for x
    x = 598,558,232,421,314/21,212,100.66
  6. Step 6: Final answer
    x = 28,217,772.58

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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.