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Finding the Fourth Proportional to 15,028.83, 20,738.19 and 8,313.39

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Solution

The fourth proportional to 15,028.83, 20,738.19 and 8,313.39 is: 11,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.83 : 20,738.19 = 8,313.39 : x
  2. Step 2: Convert to fraction form
    15,028.83/20,738.19 = 8,313.39/x
  3. Step 3: Cross multiply
    15,028.83x = 20,738.19 × 8,313.39
  4. Step 4: Simplify right side
    15,028.83x = 172,404,661.36
  5. Step 5: Solve for x
    x = 172,404,661.36/15,028.83
  6. Step 6: Final answer
    x = 11,471.60

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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.