Home / 13,110.54-18,105.36-11,211.12

Finding the Fourth Proportional to 13,110.54, 18,105.36 and 11,211.12

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Solution

The fourth proportional to 13,110.54, 18,105.36 and 11,211.12 is: 15,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.54 : 18,105.36 = 11,211.12 : x
  2. Step 2: Convert to fraction form
    13,110.54/18,105.36 = 11,211.12/x
  3. Step 3: Cross multiply
    13,110.54x = 18,105.36 × 11,211.12
  4. Step 4: Simplify right side
    13,110.54x = 202,981,363.60
  5. Step 5: Solve for x
    x = 202,981,363.60/13,110.54
  6. Step 6: Final answer
    x = 15,482.30

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Double scale
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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.