Home / 13,629.48-18,808.11-7,964.34

Finding the Fourth Proportional to 13,629.48, 18,808.11 and 7,964.34

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Solution

The fourth proportional to 13,629.48, 18,808.11 and 7,964.34 is: 10,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.48 : 18,808.11 = 7,964.34 : x
  2. Step 2: Convert to fraction form
    13,629.48/18,808.11 = 7,964.34/x
  3. Step 3: Cross multiply
    13,629.48x = 18,808.11 × 7,964.34
  4. Step 4: Simplify right side
    13,629.48x = 149,794,182.80
  5. Step 5: Solve for x
    x = 149,794,182.80/13,629.48
  6. Step 6: Final answer
    x = 10,990.45

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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.