Home / 19,819.69-27,352.38-11,436.19

Finding the Fourth Proportional to 19,819.69, 27,352.38 and 11,436.19

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Solution

The fourth proportional to 19,819.69, 27,352.38 and 11,436.19 is: 15,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.69 : 27,352.38 = 11,436.19 : x
  2. Step 2: Convert to fraction form
    19,819.69/27,352.38 = 11,436.19/x
  3. Step 3: Cross multiply
    19,819.69x = 27,352.38 × 11,436.19
  4. Step 4: Simplify right side
    19,819.69x = 312,806,989.14
  5. Step 5: Solve for x
    x = 312,806,989.14/19,819.69
  6. Step 6: Final answer
    x = 15,782.64

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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.