Home / 20,415.26-30,634.56-7,933.68

Finding the Fourth Proportional to 20,415.26, 30,634.56 and 7,933.68

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Solution

The fourth proportional to 20,415.26, 30,634.56 and 7,933.68 is: 11,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.26 : 30,634.56 = 7,933.68 : x
  2. Step 2: Convert to fraction form
    20,415.26/30,634.56 = 7,933.68/x
  3. Step 3: Cross multiply
    20,415.26x = 30,634.56 × 7,933.68
  4. Step 4: Simplify right side
    20,415.26x = 243,044,795.98
  5. Step 5: Solve for x
    x = 243,044,795.98/20,415.26
  6. Step 6: Final answer
    x = 11,905.06

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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.