Home / 20,027.88-27,638.10-11,075.04

Finding the Fourth Proportional to 20,027.88, 27,638.10 and 11,075.04

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Solution

The fourth proportional to 20,027.88, 27,638.10 and 11,075.04 is: 15,283.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,027.88 : 27,638.10 = 11,075.04 : x
  2. Step 2: Convert to fraction form
    20,027.88/27,638.10 = 11,075.04/x
  3. Step 3: Cross multiply
    20,027.88x = 27,638.10 × 11,075.04
  4. Step 4: Simplify right side
    20,027.88x = 306,093,063.02
  5. Step 5: Solve for x
    x = 306,093,063.02/20,027.88
  6. Step 6: Final answer
    x = 15,283.35

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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.