Home / 20,728.24-31,096.79-6,689.07

Finding the Fourth Proportional to 20,728.24, 31,096.79 and 6,689.07

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Solution

The fourth proportional to 20,728.24, 31,096.79 and 6,689.07 is: 10,035.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.24 : 31,096.79 = 6,689.07 : x
  2. Step 2: Convert to fraction form
    20,728.24/31,096.79 = 6,689.07/x
  3. Step 3: Cross multiply
    20,728.24x = 31,096.79 × 6,689.07
  4. Step 4: Simplify right side
    20,728.24x = 208,008,605.09
  5. Step 5: Solve for x
    x = 208,008,605.09/20,728.24
  6. Step 6: Final answer
    x = 10,035.03

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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.