Home / 20,621.42-30,932.11-7,473.77

Finding the Fourth Proportional to 20,621.42, 30,932.11 and 7,473.77

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Solution

The fourth proportional to 20,621.42, 30,932.11 and 7,473.77 is: 11,210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.42 : 30,932.11 = 7,473.77 : x
  2. Step 2: Convert to fraction form
    20,621.42/30,932.11 = 7,473.77/x
  3. Step 3: Cross multiply
    20,621.42x = 30,932.11 × 7,473.77
  4. Step 4: Simplify right side
    20,621.42x = 231,179,475.75
  5. Step 5: Solve for x
    x = 231,179,475.75/20,621.42
  6. Step 6: Final answer
    x = 11,210.65

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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.