Home / 13,021.20-17,968.32-7,716.36

Finding the Fourth Proportional to 13,021.20, 17,968.32 and 7,716.36

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Solution

The fourth proportional to 13,021.20, 17,968.32 and 7,716.36 is: 10,648.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.20 : 17,968.32 = 7,716.36 : x
  2. Step 2: Convert to fraction form
    13,021.20/17,968.32 = 7,716.36/x
  3. Step 3: Cross multiply
    13,021.20x = 17,968.32 × 7,716.36
  4. Step 4: Simplify right side
    13,021.20x = 138,650,025.72
  5. Step 5: Solve for x
    x = 138,650,025.72/13,021.20
  6. Step 6: Final answer
    x = 10,648.02

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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.