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Finding the Fourth Proportional to 12,507.80, 18,761.70 and 3,273.80

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Solution

The fourth proportional to 12,507.80, 18,761.70 and 3,273.80 is: 4,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,507.80 : 18,761.70 = 3,273.80 : x
  2. Step 2: Convert to fraction form
    12,507.80/18,761.70 = 3,273.80/x
  3. Step 3: Cross multiply
    12,507.80x = 18,761.70 × 3,273.80
  4. Step 4: Simplify right side
    12,507.80x = 61,422,053.46
  5. Step 5: Solve for x
    x = 61,422,053.46/12,507.80
  6. Step 6: Final answer
    x = 4,910.70

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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.