Home / 20,621.54-30,932.30-7,473.89

Finding the Fourth Proportional to 20,621.54, 30,932.30 and 7,473.89

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Solution

The fourth proportional to 20,621.54, 30,932.30 and 7,473.89 is: 11,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.54 : 30,932.30 = 7,473.89 : x
  2. Step 2: Convert to fraction form
    20,621.54/30,932.30 = 7,473.89/x
  3. Step 3: Cross multiply
    20,621.54x = 30,932.30 × 7,473.89
  4. Step 4: Simplify right side
    20,621.54x = 231,184,703.66
  5. Step 5: Solve for x
    x = 231,184,703.66/20,621.54
  6. Step 6: Final answer
    x = 11,210.83

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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.