Home / 13,231.54-18,258.90-7,181.64

Finding the Fourth Proportional to 13,231.54, 18,258.90 and 7,181.64

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Solution

The fourth proportional to 13,231.54, 18,258.90 and 7,181.64 is: 9,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.54 : 18,258.90 = 7,181.64 : x
  2. Step 2: Convert to fraction form
    13,231.54/18,258.90 = 7,181.64/x
  3. Step 3: Cross multiply
    13,231.54x = 18,258.90 × 7,181.64
  4. Step 4: Simplify right side
    13,231.54x = 131,128,846.60
  5. Step 5: Solve for x
    x = 131,128,846.60/13,231.54
  6. Step 6: Final answer
    x = 9,910.32

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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.