Home / 20,712.56-28,583.42-11,760.26

Finding the Fourth Proportional to 20,712.56, 28,583.42 and 11,760.26

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Solution

The fourth proportional to 20,712.56, 28,583.42 and 11,760.26 is: 16,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.56 : 28,583.42 = 11,760.26 : x
  2. Step 2: Convert to fraction form
    20,712.56/28,583.42 = 11,760.26/x
  3. Step 3: Cross multiply
    20,712.56x = 28,583.42 × 11,760.26
  4. Step 4: Simplify right side
    20,712.56x = 336,148,249.17
  5. Step 5: Solve for x
    x = 336,148,249.17/20,712.56
  6. Step 6: Final answer
    x = 16,229.20

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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.