Home / 20,412.75-30,621.06-7,933.74

Finding the Fourth Proportional to 20,412.75, 30,621.06 and 7,933.74

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Solution

The fourth proportional to 20,412.75, 30,621.06 and 7,933.74 is: 11,901.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.75 : 30,621.06 = 7,933.74 : x
  2. Step 2: Convert to fraction form
    20,412.75/30,621.06 = 7,933.74/x
  3. Step 3: Cross multiply
    20,412.75x = 30,621.06 × 7,933.74
  4. Step 4: Simplify right side
    20,412.75x = 242,939,528.56
  5. Step 5: Solve for x
    x = 242,939,528.56/20,412.75
  6. Step 6: Final answer
    x = 11,901.36

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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.