Home / 28,121.77-38,811.96-27,198.76

Finding the Fourth Proportional to 28,121.77, 38,811.96 and 27,198.76

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Solution

The fourth proportional to 28,121.77, 38,811.96 and 27,198.76 is: 37,538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.77 : 38,811.96 = 27,198.76 : x
  2. Step 2: Convert to fraction form
    28,121.77/38,811.96 = 27,198.76/x
  3. Step 3: Cross multiply
    28,121.77x = 38,811.96 × 27,198.76
  4. Step 4: Simplify right side
    28,121.77x = 1,055,637,185.17
  5. Step 5: Solve for x
    x = 1,055,637,185.17/28,121.77
  6. Step 6: Final answer
    x = 37,538.08

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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.