Home / 18,786.03-28,168.51-12,869.60

Finding the Fourth Proportional to 18,786.03, 28,168.51 and 12,869.60

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Solution

The fourth proportional to 18,786.03, 28,168.51 and 12,869.60 is: 19,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.03 : 28,168.51 = 12,869.60 : x
  2. Step 2: Convert to fraction form
    18,786.03/28,168.51 = 12,869.60/x
  3. Step 3: Cross multiply
    18,786.03x = 28,168.51 × 12,869.60
  4. Step 4: Simplify right side
    18,786.03x = 362,517,251.11
  5. Step 5: Solve for x
    x = 362,517,251.11/18,786.03
  6. Step 6: Final answer
    x = 19,297.18

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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.