Home / 20,412.88-30,621.25-7,933.87

Finding the Fourth Proportional to 20,412.88, 30,621.25 and 7,933.87

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Solution

The fourth proportional to 20,412.88, 30,621.25 and 7,933.87 is: 11,901.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.88 : 30,621.25 = 7,933.87 : x
  2. Step 2: Convert to fraction form
    20,412.88/30,621.25 = 7,933.87/x
  3. Step 3: Cross multiply
    20,412.88x = 30,621.25 × 7,933.87
  4. Step 4: Simplify right side
    20,412.88x = 242,944,863.63
  5. Step 5: Solve for x
    x = 242,944,863.63/20,412.88
  6. Step 6: Final answer
    x = 11,901.55

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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.