Home / 11,731.36-16,189.20-7,016.80

Finding the Fourth Proportional to 11,731.36, 16,189.20 and 7,016.80

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Solution

The fourth proportional to 11,731.36, 16,189.20 and 7,016.80 is: 9,683.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,731.36 : 16,189.20 = 7,016.80 : x
  2. Step 2: Convert to fraction form
    11,731.36/16,189.20 = 7,016.80/x
  3. Step 3: Cross multiply
    11,731.36x = 16,189.20 × 7,016.80
  4. Step 4: Simplify right side
    11,731.36x = 113,596,378.56
  5. Step 5: Solve for x
    x = 113,596,378.56/11,731.36
  6. Step 6: Final answer
    x = 9,683.14

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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.