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Finding the Fourth Proportional to 18,203.67, 25,119.32 and 11,137.23

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Solution

The fourth proportional to 18,203.67, 25,119.32 and 11,137.23 is: 15,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.67 : 25,119.32 = 11,137.23 : x
  2. Step 2: Convert to fraction form
    18,203.67/25,119.32 = 11,137.23/x
  3. Step 3: Cross multiply
    18,203.67x = 25,119.32 × 11,137.23
  4. Step 4: Simplify right side
    18,203.67x = 279,759,588.60
  5. Step 5: Solve for x
    x = 279,759,588.60/18,203.67
  6. Step 6: Final answer
    x = 15,368.31

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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.