Home / 20,231.46-30,347.15-5,440.39

Finding the Fourth Proportional to 20,231.46, 30,347.15 and 5,440.39

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Solution

The fourth proportional to 20,231.46, 30,347.15 and 5,440.39 is: 8,160.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.46 : 30,347.15 = 5,440.39 : x
  2. Step 2: Convert to fraction form
    20,231.46/30,347.15 = 5,440.39/x
  3. Step 3: Cross multiply
    20,231.46x = 30,347.15 × 5,440.39
  4. Step 4: Simplify right side
    20,231.46x = 165,100,228.32
  5. Step 5: Solve for x
    x = 165,100,228.32/20,231.46
  6. Step 6: Final answer
    x = 8,160.57

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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.