Home / 13,230.03-18,257.39-7,180.28

Finding the Fourth Proportional to 13,230.03, 18,257.39 and 7,180.28

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Solution

The fourth proportional to 13,230.03, 18,257.39 and 7,180.28 is: 9,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.03 : 18,257.39 = 7,180.28 : x
  2. Step 2: Convert to fraction form
    13,230.03/18,257.39 = 7,180.28/x
  3. Step 3: Cross multiply
    13,230.03x = 18,257.39 × 7,180.28
  4. Step 4: Simplify right side
    13,230.03x = 131,093,045.08
  5. Step 5: Solve for x
    x = 131,093,045.08/13,230.03
  6. Step 6: Final answer
    x = 9,908.75

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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.