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Finding the Fourth Proportional to 12,555.52, 18,834.34 and 3,321.52

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Solution

The fourth proportional to 12,555.52, 18,834.34 and 3,321.52 is: 4,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.52 : 18,834.34 = 3,321.52 : x
  2. Step 2: Convert to fraction form
    12,555.52/18,834.34 = 3,321.52/x
  3. Step 3: Cross multiply
    12,555.52x = 18,834.34 × 3,321.52
  4. Step 4: Simplify right side
    12,555.52x = 62,558,637.00
  5. Step 5: Solve for x
    x = 62,558,637.00/12,555.52
  6. Step 6: Final answer
    x = 4,982.56

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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.