Home / 13,286.60-18,335.63-7,318.48

Finding the Fourth Proportional to 13,286.60, 18,335.63 and 7,318.48

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Solution

The fourth proportional to 13,286.60, 18,335.63 and 7,318.48 is: 10,099.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.60 : 18,335.63 = 7,318.48 : x
  2. Step 2: Convert to fraction form
    13,286.60/18,335.63 = 7,318.48/x
  3. Step 3: Cross multiply
    13,286.60x = 18,335.63 × 7,318.48
  4. Step 4: Simplify right side
    13,286.60x = 134,188,941.44
  5. Step 5: Solve for x
    x = 134,188,941.44/13,286.60
  6. Step 6: Final answer
    x = 10,099.57

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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.