Home / 28,195.03-38,910.42-15,619.78

Finding the Fourth Proportional to 28,195.03, 38,910.42 and 15,619.78

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Solution

The fourth proportional to 28,195.03, 38,910.42 and 15,619.78 is: 21,556.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.03 : 38,910.42 = 15,619.78 : x
  2. Step 2: Convert to fraction form
    28,195.03/38,910.42 = 15,619.78/x
  3. Step 3: Cross multiply
    28,195.03x = 38,910.42 × 15,619.78
  4. Step 4: Simplify right side
    28,195.03x = 607,772,200.11
  5. Step 5: Solve for x
    x = 607,772,200.11/28,195.03
  6. Step 6: Final answer
    x = 21,556.00

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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.