Home / 13,178.55-18,185.63-7,209.03

Finding the Fourth Proportional to 13,178.55, 18,185.63 and 7,209.03

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Solution

The fourth proportional to 13,178.55, 18,185.63 and 7,209.03 is: 9,948.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.55 : 18,185.63 = 7,209.03 : x
  2. Step 2: Convert to fraction form
    13,178.55/18,185.63 = 7,209.03/x
  3. Step 3: Cross multiply
    13,178.55x = 18,185.63 × 7,209.03
  4. Step 4: Simplify right side
    13,178.55x = 131,100,716.19
  5. Step 5: Solve for x
    x = 131,100,716.19/13,178.55
  6. Step 6: Final answer
    x = 9,948.04

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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.