Home / 20,467.65-28,243.77-11,513.37

Finding the Fourth Proportional to 20,467.65, 28,243.77 and 11,513.37

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Solution

The fourth proportional to 20,467.65, 28,243.77 and 11,513.37 is: 15,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.65 : 28,243.77 = 11,513.37 : x
  2. Step 2: Convert to fraction form
    20,467.65/28,243.77 = 11,513.37/x
  3. Step 3: Cross multiply
    20,467.65x = 28,243.77 × 11,513.37
  4. Step 4: Simplify right side
    20,467.65x = 325,180,974.20
  5. Step 5: Solve for x
    x = 325,180,974.20/20,467.65
  6. Step 6: Final answer
    x = 15,887.56

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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.