Home / 13,629.75-18,808.12-7,662.31

Finding the Fourth Proportional to 13,629.75, 18,808.12 and 7,662.31

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Solution

The fourth proportional to 13,629.75, 18,808.12 and 7,662.31 is: 10,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.75 : 18,808.12 = 7,662.31 : x
  2. Step 2: Convert to fraction form
    13,629.75/18,808.12 = 7,662.31/x
  3. Step 3: Cross multiply
    13,629.75x = 18,808.12 × 7,662.31
  4. Step 4: Simplify right side
    13,629.75x = 144,113,645.96
  5. Step 5: Solve for x
    x = 144,113,645.96/13,629.75
  6. Step 6: Final answer
    x = 10,573.46

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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.