Home / 20,814.25-28,723.08-11,382.61

Finding the Fourth Proportional to 20,814.25, 28,723.08 and 11,382.61

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Solution

The fourth proportional to 20,814.25, 28,723.08 and 11,382.61 is: 15,707.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.25 : 28,723.08 = 11,382.61 : x
  2. Step 2: Convert to fraction form
    20,814.25/28,723.08 = 11,382.61/x
  3. Step 3: Cross multiply
    20,814.25x = 28,723.08 × 11,382.61
  4. Step 4: Simplify right side
    20,814.25x = 326,943,610.36
  5. Step 5: Solve for x
    x = 326,943,610.36/20,814.25
  6. Step 6: Final answer
    x = 15,707.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.