Home / 13,382.88-20,074.32-7,539.84

Finding the Fourth Proportional to 13,382.88, 20,074.32 and 7,539.84

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Solution

The fourth proportional to 13,382.88, 20,074.32 and 7,539.84 is: 11,309.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.88 : 20,074.32 = 7,539.84 : x
  2. Step 2: Convert to fraction form
    13,382.88/20,074.32 = 7,539.84/x
  3. Step 3: Cross multiply
    13,382.88x = 20,074.32 × 7,539.84
  4. Step 4: Simplify right side
    13,382.88x = 151,357,160.91
  5. Step 5: Solve for x
    x = 151,357,160.91/13,382.88
  6. Step 6: Final answer
    x = 11,309.76

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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.