Home / 11,918.08-16,439.42-7,674.68

Finding the Fourth Proportional to 11,918.08, 16,439.42 and 7,674.68

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Solution

The fourth proportional to 11,918.08, 16,439.42 and 7,674.68 is: 10,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.08 : 16,439.42 = 7,674.68 : x
  2. Step 2: Convert to fraction form
    11,918.08/16,439.42 = 7,674.68/x
  3. Step 3: Cross multiply
    11,918.08x = 16,439.42 × 7,674.68
  4. Step 4: Simplify right side
    11,918.08x = 126,167,287.89
  5. Step 5: Solve for x
    x = 126,167,287.89/11,918.08
  6. Step 6: Final answer
    x = 10,586.21

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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.