Home / 12,318.21-18,473.27-10,489.23

Finding the Fourth Proportional to 12,318.21, 18,473.27 and 10,489.23

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Solution

The fourth proportional to 12,318.21, 18,473.27 and 10,489.23 is: 15,730.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.21 : 18,473.27 = 10,489.23 : x
  2. Step 2: Convert to fraction form
    12,318.21/18,473.27 = 10,489.23/x
  3. Step 3: Cross multiply
    12,318.21x = 18,473.27 × 10,489.23
  4. Step 4: Simplify right side
    12,318.21x = 193,770,325.44
  5. Step 5: Solve for x
    x = 193,770,325.44/12,318.21
  6. Step 6: Final answer
    x = 15,730.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.