Home / 37,122.95-51,229.05-20,990

Finding the Fourth Proportional to 37,122.95, 51,229.05 and 20,990

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Solution

The fourth proportional to 37,122.95, 51,229.05 and 20,990 is: 28,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,122.95 : 51,229.05 = 20,990 : x
  2. Step 2: Convert to fraction form
    37,122.95/51,229.05 = 20,990/x
  3. Step 3: Cross multiply
    37,122.95x = 51,229.05 × 20,990
  4. Step 4: Simplify right side
    37,122.95x = 1,075,297,759.50
  5. Step 5: Solve for x
    x = 1,075,297,759.50/37,122.95
  6. Step 6: Final answer
    x = 28,965.85

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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.