Home / 21,086.92-31,629.77-5,504.55

Finding the Fourth Proportional to 21,086.92, 31,629.77 and 5,504.55

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Solution

The fourth proportional to 21,086.92, 31,629.77 and 5,504.55 is: 8,256.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.92 : 31,629.77 = 5,504.55 : x
  2. Step 2: Convert to fraction form
    21,086.92/31,629.77 = 5,504.55/x
  3. Step 3: Cross multiply
    21,086.92x = 31,629.77 × 5,504.55
  4. Step 4: Simplify right side
    21,086.92x = 174,107,650.45
  5. Step 5: Solve for x
    x = 174,107,650.45/21,086.92
  6. Step 6: Final answer
    x = 8,256.67

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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.