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Finding the Fourth Proportional to 12,539.50, 18,809.26 and 3,305.50

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Solution

The fourth proportional to 12,539.50, 18,809.26 and 3,305.50 is: 4,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.50 : 18,809.26 = 3,305.50 : x
  2. Step 2: Convert to fraction form
    12,539.50/18,809.26 = 3,305.50/x
  3. Step 3: Cross multiply
    12,539.50x = 18,809.26 × 3,305.50
  4. Step 4: Simplify right side
    12,539.50x = 62,174,008.93
  5. Step 5: Solve for x
    x = 62,174,008.93/12,539.50
  6. Step 6: Final answer
    x = 4,958.25

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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.