Home / 15,845.37-21,865.98-8,771.64

Finding the Fourth Proportional to 15,845.37, 21,865.98 and 8,771.64

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Solution

The fourth proportional to 15,845.37, 21,865.98 and 8,771.64 is: 12,104.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.37 : 21,865.98 = 8,771.64 : x
  2. Step 2: Convert to fraction form
    15,845.37/21,865.98 = 8,771.64/x
  3. Step 3: Cross multiply
    15,845.37x = 21,865.98 × 8,771.64
  4. Step 4: Simplify right side
    15,845.37x = 191,800,504.81
  5. Step 5: Solve for x
    x = 191,800,504.81/15,845.37
  6. Step 6: Final answer
    x = 12,104.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.