Home / 19,086.41-28,639.62-13,864.56

Finding the Fourth Proportional to 19,086.41, 28,639.62 and 13,864.56

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Solution

The fourth proportional to 19,086.41, 28,639.62 and 13,864.56 is: 20,804.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,086.41 : 28,639.62 = 13,864.56 : x
  2. Step 2: Convert to fraction form
    19,086.41/28,639.62 = 13,864.56/x
  3. Step 3: Cross multiply
    19,086.41x = 28,639.62 × 13,864.56
  4. Step 4: Simplify right side
    19,086.41x = 397,075,729.87
  5. Step 5: Solve for x
    x = 397,075,729.87/19,086.41
  6. Step 6: Final answer
    x = 20,804.11

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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.