Home / 13,189.30-18,201.24-7,220.99

Finding the Fourth Proportional to 13,189.30, 18,201.24 and 7,220.99

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Solution

The fourth proportional to 13,189.30, 18,201.24 and 7,220.99 is: 9,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.30 : 18,201.24 = 7,220.99 : x
  2. Step 2: Convert to fraction form
    13,189.30/18,201.24 = 7,220.99/x
  3. Step 3: Cross multiply
    13,189.30x = 18,201.24 × 7,220.99
  4. Step 4: Simplify right side
    13,189.30x = 131,431,017.53
  5. Step 5: Solve for x
    x = 131,431,017.53/13,189.30
  6. Step 6: Final answer
    x = 9,964.97

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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.