Home / 20,892.37-31,309.09-11,536.60

Finding the Fourth Proportional to 20,892.37, 31,309.09 and 11,536.60

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Solution

The fourth proportional to 20,892.37, 31,309.09 and 11,536.60 is: 17,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.37 : 31,309.09 = 11,536.60 : x
  2. Step 2: Convert to fraction form
    20,892.37/31,309.09 = 11,536.60/x
  3. Step 3: Cross multiply
    20,892.37x = 31,309.09 × 11,536.60
  4. Step 4: Simplify right side
    20,892.37x = 361,200,340.58
  5. Step 5: Solve for x
    x = 361,200,340.58/20,892.37
  6. Step 6: Final answer
    x = 17,288.63

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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.