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Finding the Fourth Proportional to 20,630.53, 30,940.82 and 9,526.54

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Solution

The fourth proportional to 20,630.53, 30,940.82 and 9,526.54 is: 14,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.53 : 30,940.82 = 9,526.54 : x
  2. Step 2: Convert to fraction form
    20,630.53/30,940.82 = 9,526.54/x
  3. Step 3: Cross multiply
    20,630.53x = 30,940.82 × 9,526.54
  4. Step 4: Simplify right side
    20,630.53x = 294,758,804.66
  5. Step 5: Solve for x
    x = 294,758,804.66/20,630.53
  6. Step 6: Final answer
    x = 14,287.51

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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.