Home / 21,029.22-29,075.76-20,099.75

Finding the Fourth Proportional to 21,029.22, 29,075.76 and 20,099.75

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Solution

The fourth proportional to 21,029.22, 29,075.76 and 20,099.75 is: 27,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.22 : 29,075.76 = 20,099.75 : x
  2. Step 2: Convert to fraction form
    21,029.22/29,075.76 = 20,099.75/x
  3. Step 3: Cross multiply
    21,029.22x = 29,075.76 × 20,099.75
  4. Step 4: Simplify right side
    21,029.22x = 584,415,361.68
  5. Step 5: Solve for x
    x = 584,415,361.68/21,029.22
  6. Step 6: Final answer
    x = 27,790.63

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1.5x scale

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.