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Finding the Fourth Proportional to 12,920.52, 17,835.73 and 8,734.44

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Solution

The fourth proportional to 12,920.52, 17,835.73 and 8,734.44 is: 12,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.52 : 17,835.73 = 8,734.44 : x
  2. Step 2: Convert to fraction form
    12,920.52/17,835.73 = 8,734.44/x
  3. Step 3: Cross multiply
    12,920.52x = 17,835.73 × 8,734.44
  4. Step 4: Simplify right side
    12,920.52x = 155,785,113.54
  5. Step 5: Solve for x
    x = 155,785,113.54/12,920.52
  6. Step 6: Final answer
    x = 12,057.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.