Home / 13,211.49-18,229.01-7,619.25

Finding the Fourth Proportional to 13,211.49, 18,229.01 and 7,619.25

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Solution

The fourth proportional to 13,211.49, 18,229.01 and 7,619.25 is: 10,512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.49 : 18,229.01 = 7,619.25 : x
  2. Step 2: Convert to fraction form
    13,211.49/18,229.01 = 7,619.25/x
  3. Step 3: Cross multiply
    13,211.49x = 18,229.01 × 7,619.25
  4. Step 4: Simplify right side
    13,211.49x = 138,891,346.35
  5. Step 5: Solve for x
    x = 138,891,346.35/13,211.49
  6. Step 6: Final answer
    x = 10,512.92

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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.