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Finding the Fourth Proportional to 18,716.70, 28,050.70 and 7,610.44

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Solution

The fourth proportional to 18,716.70, 28,050.70 and 7,610.44 is: 11,405.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.70 : 28,050.70 = 7,610.44 : x
  2. Step 2: Convert to fraction form
    18,716.70/28,050.70 = 7,610.44/x
  3. Step 3: Cross multiply
    18,716.70x = 28,050.70 × 7,610.44
  4. Step 4: Simplify right side
    18,716.70x = 213,478,169.31
  5. Step 5: Solve for x
    x = 213,478,169.31/18,716.70
  6. Step 6: Final answer
    x = 11,405.76

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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.