Home / 20,723.87-31,050.66-12,806.66

Finding the Fourth Proportional to 20,723.87, 31,050.66 and 12,806.66

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Solution

The fourth proportional to 20,723.87, 31,050.66 and 12,806.66 is: 19,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.87 : 31,050.66 = 12,806.66 : x
  2. Step 2: Convert to fraction form
    20,723.87/31,050.66 = 12,806.66/x
  3. Step 3: Cross multiply
    20,723.87x = 31,050.66 × 12,806.66
  4. Step 4: Simplify right side
    20,723.87x = 397,655,245.40
  5. Step 5: Solve for x
    x = 397,655,245.40/20,723.87
  6. Step 6: Final answer
    x = 19,188.27

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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.