Home / 20,723.88-31,062.66-8,240.52

Finding the Fourth Proportional to 20,723.88, 31,062.66 and 8,240.52

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Solution

The fourth proportional to 20,723.88, 31,062.66 and 8,240.52 is: 12,351.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.88 : 31,062.66 = 8,240.52 : x
  2. Step 2: Convert to fraction form
    20,723.88/31,062.66 = 8,240.52/x
  3. Step 3: Cross multiply
    20,723.88x = 31,062.66 × 8,240.52
  4. Step 4: Simplify right side
    20,723.88x = 255,972,470.98
  5. Step 5: Solve for x
    x = 255,972,470.98/20,723.88
  6. Step 6: Final answer
    x = 12,351.57

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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.