Home / 19,085.78-28,619.76-11,190.71

Finding the Fourth Proportional to 19,085.78, 28,619.76 and 11,190.71

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Solution

The fourth proportional to 19,085.78, 28,619.76 and 11,190.71 is: 16,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,085.78 : 28,619.76 = 11,190.71 : x
  2. Step 2: Convert to fraction form
    19,085.78/28,619.76 = 11,190.71/x
  3. Step 3: Cross multiply
    19,085.78x = 28,619.76 × 11,190.71
  4. Step 4: Simplify right side
    19,085.78x = 320,275,291.33
  5. Step 5: Solve for x
    x = 320,275,291.33/19,085.78
  6. Step 6: Final answer
    x = 16,780.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.