Home / 19,338.87-28,963.33-18,806.78

Finding the Fourth Proportional to 19,338.87, 28,963.33 and 18,806.78

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Solution

The fourth proportional to 19,338.87, 28,963.33 and 18,806.78 is: 28,166.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338.87 : 28,963.33 = 18,806.78 : x
  2. Step 2: Convert to fraction form
    19,338.87/28,963.33 = 18,806.78/x
  3. Step 3: Cross multiply
    19,338.87x = 28,963.33 × 18,806.78
  4. Step 4: Simplify right side
    19,338.87x = 544,706,818.81
  5. Step 5: Solve for x
    x = 544,706,818.81/19,338.87
  6. Step 6: Final answer
    x = 28,166.42

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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.