Home / 11,315.50-16,990.62-10,816.36

Finding the Fourth Proportional to 11,315.50, 16,990.62 and 10,816.36

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Solution

The fourth proportional to 11,315.50, 16,990.62 and 10,816.36 is: 16,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.50 : 16,990.62 = 10,816.36 : x
  2. Step 2: Convert to fraction form
    11,315.50/16,990.62 = 10,816.36/x
  3. Step 3: Cross multiply
    11,315.50x = 16,990.62 × 10,816.36
  4. Step 4: Simplify right side
    11,315.50x = 183,776,662.54
  5. Step 5: Solve for x
    x = 183,776,662.54/11,315.50
  6. Step 6: Final answer
    x = 16,241.14

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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.