Home / 20,623.41-30,935.11-7,475.79

Finding the Fourth Proportional to 20,623.41, 30,935.11 and 7,475.79

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Solution

The fourth proportional to 20,623.41, 30,935.11 and 7,475.79 is: 11,213.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.41 : 30,935.11 = 7,475.79 : x
  2. Step 2: Convert to fraction form
    20,623.41/30,935.11 = 7,475.79/x
  3. Step 3: Cross multiply
    20,623.41x = 30,935.11 × 7,475.79
  4. Step 4: Simplify right side
    20,623.41x = 231,264,367.30
  5. Step 5: Solve for x
    x = 231,264,367.30/20,623.41
  6. Step 6: Final answer
    x = 11,213.68

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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.