Home / 20,342.23-30,518.21-8,489.41

Finding the Fourth Proportional to 20,342.23, 30,518.21 and 8,489.41

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Solution

The fourth proportional to 20,342.23, 30,518.21 and 8,489.41 is: 12,736.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.23 : 30,518.21 = 8,489.41 : x
  2. Step 2: Convert to fraction form
    20,342.23/30,518.21 = 8,489.41/x
  3. Step 3: Cross multiply
    20,342.23x = 30,518.21 × 8,489.41
  4. Step 4: Simplify right side
    20,342.23x = 259,081,444.57
  5. Step 5: Solve for x
    x = 259,081,444.57/20,342.23
  6. Step 6: Final answer
    x = 12,736.14

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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.