Home / 20,924.91-31,387.53-7,777.27

Finding the Fourth Proportional to 20,924.91, 31,387.53 and 7,777.27

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Solution

The fourth proportional to 20,924.91, 31,387.53 and 7,777.27 is: 11,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.91 : 31,387.53 = 7,777.27 : x
  2. Step 2: Convert to fraction form
    20,924.91/31,387.53 = 7,777.27/x
  3. Step 3: Cross multiply
    20,924.91x = 31,387.53 × 7,777.27
  4. Step 4: Simplify right side
    20,924.91x = 244,109,121.67
  5. Step 5: Solve for x
    x = 244,109,121.67/20,924.91
  6. Step 6: Final answer
    x = 11,665.96

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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.