Home / 15,845.44-21,868.23-8,771.86

Finding the Fourth Proportional to 15,845.44, 21,868.23 and 8,771.86

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Solution

The fourth proportional to 15,845.44, 21,868.23 and 8,771.86 is: 12,106.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.44 : 21,868.23 = 8,771.86 : x
  2. Step 2: Convert to fraction form
    15,845.44/21,868.23 = 8,771.86/x
  3. Step 3: Cross multiply
    15,845.44x = 21,868.23 × 8,771.86
  4. Step 4: Simplify right side
    15,845.44x = 191,825,062.90
  5. Step 5: Solve for x
    x = 191,825,062.90/15,845.44
  6. Step 6: Final answer
    x = 12,106.01

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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.