Home / 19,083.78-28,616.76-11,188.71

Finding the Fourth Proportional to 19,083.78, 28,616.76 and 11,188.71

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Solution

The fourth proportional to 19,083.78, 28,616.76 and 11,188.71 is: 16,777.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,083.78 : 28,616.76 = 11,188.71 : x
  2. Step 2: Convert to fraction form
    19,083.78/28,616.76 = 11,188.71/x
  3. Step 3: Cross multiply
    19,083.78x = 28,616.76 × 11,188.71
  4. Step 4: Simplify right side
    19,083.78x = 320,184,628.78
  5. Step 5: Solve for x
    x = 320,184,628.78/19,083.78
  6. Step 6: Final answer
    x = 16,777.84

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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.