Home / 20,733.85-31,113.60-10,880.20

Finding the Fourth Proportional to 20,733.85, 31,113.60 and 10,880.20

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Solution

The fourth proportional to 20,733.85, 31,113.60 and 10,880.20 is: 16,327.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.85 : 31,113.60 = 10,880.20 : x
  2. Step 2: Convert to fraction form
    20,733.85/31,113.60 = 10,880.20/x
  3. Step 3: Cross multiply
    20,733.85x = 31,113.60 × 10,880.20
  4. Step 4: Simplify right side
    20,733.85x = 338,522,190.72
  5. Step 5: Solve for x
    x = 338,522,190.72/20,733.85
  6. Step 6: Final answer
    x = 16,327.03

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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.