Home / 19,620.75-27,075.75-11,122.76

Finding the Fourth Proportional to 19,620.75, 27,075.75 and 11,122.76

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Solution

The fourth proportional to 19,620.75, 27,075.75 and 11,122.76 is: 15,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.75 : 27,075.75 = 11,122.76 : x
  2. Step 2: Convert to fraction form
    19,620.75/27,075.75 = 11,122.76/x
  3. Step 3: Cross multiply
    19,620.75x = 27,075.75 × 11,122.76
  4. Step 4: Simplify right side
    19,620.75x = 301,156,933.69
  5. Step 5: Solve for x
    x = 301,156,933.69/19,620.75
  6. Step 6: Final answer
    x = 15,348.90

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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.