Home / 11,918.19-16,450.30-7,439.25

Finding the Fourth Proportional to 11,918.19, 16,450.30 and 7,439.25

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Solution

The fourth proportional to 11,918.19, 16,450.30 and 7,439.25 is: 10,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.19 : 16,450.30 = 7,439.25 : x
  2. Step 2: Convert to fraction form
    11,918.19/16,450.30 = 7,439.25/x
  3. Step 3: Cross multiply
    11,918.19x = 16,450.30 × 7,439.25
  4. Step 4: Simplify right side
    11,918.19x = 122,377,812.98
  5. Step 5: Solve for x
    x = 122,377,812.98/11,918.19
  6. Step 6: Final answer
    x = 10,268.15

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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.