Home / 20,439.84-30,674.34-8,761.44

Finding the Fourth Proportional to 20,439.84, 30,674.34 and 8,761.44

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Solution

The fourth proportional to 20,439.84, 30,674.34 and 8,761.44 is: 13,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.84 : 30,674.34 = 8,761.44 : x
  2. Step 2: Convert to fraction form
    20,439.84/30,674.34 = 8,761.44/x
  3. Step 3: Cross multiply
    20,439.84x = 30,674.34 × 8,761.44
  4. Step 4: Simplify right side
    20,439.84x = 268,751,389.45
  5. Step 5: Solve for x
    x = 268,751,389.45/20,439.84
  6. Step 6: Final answer
    x = 13,148.41

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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.