Home / 18,308.39-27,431.20-12,293.19

Finding the Fourth Proportional to 18,308.39, 27,431.20 and 12,293.19

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Solution

The fourth proportional to 18,308.39, 27,431.20 and 12,293.19 is: 18,418.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.39 : 27,431.20 = 12,293.19 : x
  2. Step 2: Convert to fraction form
    18,308.39/27,431.20 = 12,293.19/x
  3. Step 3: Cross multiply
    18,308.39x = 27,431.20 × 12,293.19
  4. Step 4: Simplify right side
    18,308.39x = 337,216,953.53
  5. Step 5: Solve for x
    x = 337,216,953.53/18,308.39
  6. Step 6: Final answer
    x = 18,418.71

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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.