Home / 11,182.39-15,415.44-7,814.75

Finding the Fourth Proportional to 11,182.39, 15,415.44 and 7,814.75

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Solution

The fourth proportional to 11,182.39, 15,415.44 and 7,814.75 is: 10,772.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,182.39 : 15,415.44 = 7,814.75 : x
  2. Step 2: Convert to fraction form
    11,182.39/15,415.44 = 7,814.75/x
  3. Step 3: Cross multiply
    11,182.39x = 15,415.44 × 7,814.75
  4. Step 4: Simplify right side
    11,182.39x = 120,467,770.67
  5. Step 5: Solve for x
    x = 120,467,770.67/11,182.39
  6. Step 6: Final answer
    x = 10,772.99

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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.