Home / 20,757.28-28,644.28-11,325.64

Finding the Fourth Proportional to 20,757.28, 28,644.28 and 11,325.64

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Solution

The fourth proportional to 20,757.28, 28,644.28 and 11,325.64 is: 15,628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.28 : 28,644.28 = 11,325.64 : x
  2. Step 2: Convert to fraction form
    20,757.28/28,644.28 = 11,325.64/x
  3. Step 3: Cross multiply
    20,757.28x = 28,644.28 × 11,325.64
  4. Step 4: Simplify right side
    20,757.28x = 324,414,803.34
  5. Step 5: Solve for x
    x = 324,414,803.34/20,757.28
  6. Step 6: Final answer
    x = 15,628.97

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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.