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Finding the Fourth Proportional to 32,638, 45,040.44 and 19,390

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Solution

The fourth proportional to 32,638, 45,040.44 and 19,390 is: 26,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,638 : 45,040.44 = 19,390 : x
  2. Step 2: Convert to fraction form
    32,638/45,040.44 = 19,390/x
  3. Step 3: Cross multiply
    32,638x = 45,040.44 × 19,390
  4. Step 4: Simplify right side
    32,638x = 873,334,131.60
  5. Step 5: Solve for x
    x = 873,334,131.60/32,638
  6. Step 6: Final answer
    x = 26,758.20

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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.