Home / 12,391.44-18,558.59-7,450.22

Finding the Fourth Proportional to 12,391.44, 18,558.59 and 7,450.22

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Solution

The fourth proportional to 12,391.44, 18,558.59 and 7,450.22 is: 11,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.44 : 18,558.59 = 7,450.22 : x
  2. Step 2: Convert to fraction form
    12,391.44/18,558.59 = 7,450.22/x
  3. Step 3: Cross multiply
    12,391.44x = 18,558.59 × 7,450.22
  4. Step 4: Simplify right side
    12,391.44x = 138,265,448.35
  5. Step 5: Solve for x
    x = 138,265,448.35/12,391.44
  6. Step 6: Final answer
    x = 11,158.14

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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.