Home / 31,486.92-43,450.38-20,308.92

Finding the Fourth Proportional to 31,486.92, 43,450.38 and 20,308.92

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Solution

The fourth proportional to 31,486.92, 43,450.38 and 20,308.92 is: 28,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.92 : 43,450.38 = 20,308.92 : x
  2. Step 2: Convert to fraction form
    31,486.92/43,450.38 = 20,308.92/x
  3. Step 3: Cross multiply
    31,486.92x = 43,450.38 × 20,308.92
  4. Step 4: Simplify right side
    31,486.92x = 882,430,291.39
  5. Step 5: Solve for x
    x = 882,430,291.39/31,486.92
  6. Step 6: Final answer
    x = 28,025.30

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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.