Home / 20,727.86-31,081.71-7,571.30

Finding the Fourth Proportional to 20,727.86, 31,081.71 and 7,571.30

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Solution

The fourth proportional to 20,727.86, 31,081.71 and 7,571.30 is: 11,353.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.86 : 31,081.71 = 7,571.30 : x
  2. Step 2: Convert to fraction form
    20,727.86/31,081.71 = 7,571.30/x
  3. Step 3: Cross multiply
    20,727.86x = 31,081.71 × 7,571.30
  4. Step 4: Simplify right side
    20,727.86x = 235,328,950.92
  5. Step 5: Solve for x
    x = 235,328,950.92/20,727.86
  6. Step 6: Final answer
    x = 11,353.27

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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.