Home / 12,211.56-18,386.13-11,137.56

Finding the Fourth Proportional to 12,211.56, 18,386.13 and 11,137.56

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Solution

The fourth proportional to 12,211.56, 18,386.13 and 11,137.56 is: 16,769.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.56 : 18,386.13 = 11,137.56 : x
  2. Step 2: Convert to fraction form
    12,211.56/18,386.13 = 11,137.56/x
  3. Step 3: Cross multiply
    12,211.56x = 18,386.13 × 11,137.56
  4. Step 4: Simplify right side
    12,211.56x = 204,776,626.04
  5. Step 5: Solve for x
    x = 204,776,626.04/12,211.56
  6. Step 6: Final answer
    x = 16,769.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.