Home / 12,539.66-18,770.26-8,091.37

Finding the Fourth Proportional to 12,539.66, 18,770.26 and 8,091.37

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Solution

The fourth proportional to 12,539.66, 18,770.26 and 8,091.37 is: 12,111.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.66 : 18,770.26 = 8,091.37 : x
  2. Step 2: Convert to fraction form
    12,539.66/18,770.26 = 8,091.37/x
  3. Step 3: Cross multiply
    12,539.66x = 18,770.26 × 8,091.37
  4. Step 4: Simplify right side
    12,539.66x = 151,877,185.81
  5. Step 5: Solve for x
    x = 151,877,185.81/12,539.66
  6. Step 6: Final answer
    x = 12,111.75

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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.