Home / 20,075.49-27,704.79-11,122.83

Finding the Fourth Proportional to 20,075.49, 27,704.79 and 11,122.83

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Solution

The fourth proportional to 20,075.49, 27,704.79 and 11,122.83 is: 15,349.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.49 : 27,704.79 = 11,122.83 : x
  2. Step 2: Convert to fraction form
    20,075.49/27,704.79 = 11,122.83/x
  3. Step 3: Cross multiply
    20,075.49x = 27,704.79 × 11,122.83
  4. Step 4: Simplify right side
    20,075.49x = 308,155,669.36
  5. Step 5: Solve for x
    x = 308,155,669.36/20,075.49
  6. Step 6: Final answer
    x = 15,349.85

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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.