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Finding the Fourth Proportional to 20,630.49, 30,950.28 and 7,483.88

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Solution

The fourth proportional to 20,630.49, 30,950.28 and 7,483.88 is: 11,227.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.49 : 30,950.28 = 7,483.88 : x
  2. Step 2: Convert to fraction form
    20,630.49/30,950.28 = 7,483.88/x
  3. Step 3: Cross multiply
    20,630.49x = 30,950.28 × 7,483.88
  4. Step 4: Simplify right side
    20,630.49x = 231,628,181.49
  5. Step 5: Solve for x
    x = 231,628,181.49/20,630.49
  6. Step 6: Final answer
    x = 11,227.47

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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.