Home / 18,911.51-28,358.21-11,016.27

Finding the Fourth Proportional to 18,911.51, 28,358.21 and 11,016.27

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Solution

The fourth proportional to 18,911.51, 28,358.21 and 11,016.27 is: 16,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.51 : 28,358.21 = 11,016.27 : x
  2. Step 2: Convert to fraction form
    18,911.51/28,358.21 = 11,016.27/x
  3. Step 3: Cross multiply
    18,911.51x = 28,358.21 × 11,016.27
  4. Step 4: Simplify right side
    18,911.51x = 312,401,501.20
  5. Step 5: Solve for x
    x = 312,401,501.20/18,911.51
  6. Step 6: Final answer
    x = 16,519.12

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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.