Home / 13,146.44-18,137.78-9,370.20

Finding the Fourth Proportional to 13,146.44, 18,137.78 and 9,370.20

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Solution

The fourth proportional to 13,146.44, 18,137.78 and 9,370.20 is: 12,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.44 : 18,137.78 = 9,370.20 : x
  2. Step 2: Convert to fraction form
    13,146.44/18,137.78 = 9,370.20/x
  3. Step 3: Cross multiply
    13,146.44x = 18,137.78 × 9,370.20
  4. Step 4: Simplify right side
    13,146.44x = 169,954,626.16
  5. Step 5: Solve for x
    x = 169,954,626.16/13,146.44
  6. Step 6: Final answer
    x = 12,927.81

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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.