Home / 20,099.34-30,161.57-8,412.66

Finding the Fourth Proportional to 20,099.34, 30,161.57 and 8,412.66

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Solution

The fourth proportional to 20,099.34, 30,161.57 and 8,412.66 is: 12,624.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.34 : 30,161.57 = 8,412.66 : x
  2. Step 2: Convert to fraction form
    20,099.34/30,161.57 = 8,412.66/x
  3. Step 3: Cross multiply
    20,099.34x = 30,161.57 × 8,412.66
  4. Step 4: Simplify right side
    20,099.34x = 253,738,991.41
  5. Step 5: Solve for x
    x = 253,738,991.41/20,099.34
  6. Step 6: Final answer
    x = 12,624.24

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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.