Home / 13,028.22-17,979-7,059.90

Finding the Fourth Proportional to 13,028.22, 17,979 and 7,059.90

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Solution

The fourth proportional to 13,028.22, 17,979 and 7,059.90 is: 9,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.22 : 17,979 = 7,059.90 : x
  2. Step 2: Convert to fraction form
    13,028.22/17,979 = 7,059.90/x
  3. Step 3: Cross multiply
    13,028.22x = 17,979 × 7,059.90
  4. Step 4: Simplify right side
    13,028.22x = 126,929,942.10
  5. Step 5: Solve for x
    x = 126,929,942.10/13,028.22
  6. Step 6: Final answer
    x = 9,742.69

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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.