Home / 20,220.57-30,336.73-8,372.16

Finding the Fourth Proportional to 20,220.57, 30,336.73 and 8,372.16

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Solution

The fourth proportional to 20,220.57, 30,336.73 and 8,372.16 is: 12,560.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.57 : 30,336.73 = 8,372.16 : x
  2. Step 2: Convert to fraction form
    20,220.57/30,336.73 = 8,372.16/x
  3. Step 3: Cross multiply
    20,220.57x = 30,336.73 × 8,372.16
  4. Step 4: Simplify right side
    20,220.57x = 253,983,936.51
  5. Step 5: Solve for x
    x = 253,983,936.51/20,220.57
  6. Step 6: Final answer
    x = 12,560.67

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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.