Home / 20,760.05-28,652.52-12,261.59

Finding the Fourth Proportional to 20,760.05, 28,652.52 and 12,261.59

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Solution

The fourth proportional to 20,760.05, 28,652.52 and 12,261.59 is: 16,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.05 : 28,652.52 = 12,261.59 : x
  2. Step 2: Convert to fraction form
    20,760.05/28,652.52 = 12,261.59/x
  3. Step 3: Cross multiply
    20,760.05x = 28,652.52 × 12,261.59
  4. Step 4: Simplify right side
    20,760.05x = 351,325,309.44
  5. Step 5: Solve for x
    x = 351,325,309.44/20,760.05
  6. Step 6: Final answer
    x = 16,923.15

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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.