Home / 13,258.60-18,286.14-8,219.32

Finding the Fourth Proportional to 13,258.60, 18,286.14 and 8,219.32

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Solution

The fourth proportional to 13,258.60, 18,286.14 and 8,219.32 is: 11,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.60 : 18,286.14 = 8,219.32 : x
  2. Step 2: Convert to fraction form
    13,258.60/18,286.14 = 8,219.32/x
  3. Step 3: Cross multiply
    13,258.60x = 18,286.14 × 8,219.32
  4. Step 4: Simplify right side
    13,258.60x = 150,299,636.22
  5. Step 5: Solve for x
    x = 150,299,636.22/13,258.60
  6. Step 6: Final answer
    x = 11,336.01

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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.