Home / 19,539.87-26,961.97-11,580.81

Finding the Fourth Proportional to 19,539.87, 26,961.97 and 11,580.81

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Solution

The fourth proportional to 19,539.87, 26,961.97 and 11,580.81 is: 15,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,539.87 : 26,961.97 = 11,580.81 : x
  2. Step 2: Convert to fraction form
    19,539.87/26,961.97 = 11,580.81/x
  3. Step 3: Cross multiply
    19,539.87x = 26,961.97 × 11,580.81
  4. Step 4: Simplify right side
    19,539.87x = 312,241,451.80
  5. Step 5: Solve for x
    x = 312,241,451.80/19,539.87
  6. Step 6: Final answer
    x = 15,979.71

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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.