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Finding the Fourth Proportional to 20,018.56, 30,030 and 8,325.28

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Solution

The fourth proportional to 20,018.56, 30,030 and 8,325.28 is: 12,488.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.56 : 30,030 = 8,325.28 : x
  2. Step 2: Convert to fraction form
    20,018.56/30,030 = 8,325.28/x
  3. Step 3: Cross multiply
    20,018.56x = 30,030 × 8,325.28
  4. Step 4: Simplify right side
    20,018.56x = 250,008,158.40
  5. Step 5: Solve for x
    x = 250,008,158.40/20,018.56
  6. Step 6: Final answer
    x = 12,488.82

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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.