Home / 13,313.28-19,971.84-4,080

Finding the Fourth Proportional to 13,313.28, 19,971.84 and 4,080

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Solution

The fourth proportional to 13,313.28, 19,971.84 and 4,080 is: 6,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.28 : 19,971.84 = 4,080 : x
  2. Step 2: Convert to fraction form
    13,313.28/19,971.84 = 4,080/x
  3. Step 3: Cross multiply
    13,313.28x = 19,971.84 × 4,080
  4. Step 4: Simplify right side
    13,313.28x = 81,485,107.20
  5. Step 5: Solve for x
    x = 81,485,107.20/13,313.28
  6. Step 6: Final answer
    x = 6,120.59

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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.