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Finding the Fourth Proportional to 20,057.36, 30,087 and 7,576.40

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Solution

The fourth proportional to 20,057.36, 30,087 and 7,576.40 is: 11,364.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.36 : 30,087 = 7,576.40 : x
  2. Step 2: Convert to fraction form
    20,057.36/30,087 = 7,576.40/x
  3. Step 3: Cross multiply
    20,057.36x = 30,087 × 7,576.40
  4. Step 4: Simplify right side
    20,057.36x = 227,951,146.80
  5. Step 5: Solve for x
    x = 227,951,146.80/20,057.36
  6. Step 6: Final answer
    x = 11,364.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.