Home / 13,422.87-18,519.84-8,392.23

Finding the Fourth Proportional to 13,422.87, 18,519.84 and 8,392.23

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Solution

The fourth proportional to 13,422.87, 18,519.84 and 8,392.23 is: 11,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.87 : 18,519.84 = 8,392.23 : x
  2. Step 2: Convert to fraction form
    13,422.87/18,519.84 = 8,392.23/x
  3. Step 3: Cross multiply
    13,422.87x = 18,519.84 × 8,392.23
  4. Step 4: Simplify right side
    13,422.87x = 155,422,756.84
  5. Step 5: Solve for x
    x = 155,422,756.84/13,422.87
  6. Step 6: Final answer
    x = 11,578.95

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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.