Home / 13,177.98-18,185.67-7,209.75

Finding the Fourth Proportional to 13,177.98, 18,185.67 and 7,209.75

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Solution

The fourth proportional to 13,177.98, 18,185.67 and 7,209.75 is: 9,949.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.98 : 18,185.67 = 7,209.75 : x
  2. Step 2: Convert to fraction form
    13,177.98/18,185.67 = 7,209.75/x
  3. Step 3: Cross multiply
    13,177.98x = 18,185.67 × 7,209.75
  4. Step 4: Simplify right side
    13,177.98x = 131,114,134.28
  5. Step 5: Solve for x
    x = 131,114,134.28/13,177.98
  6. Step 6: Final answer
    x = 9,949.49

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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.