Home / 20,210.27-27,890.17-11,717.33

Finding the Fourth Proportional to 20,210.27, 27,890.17 and 11,717.33

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Solution

The fourth proportional to 20,210.27, 27,890.17 and 11,717.33 is: 16,169.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.27 : 27,890.17 = 11,717.33 : x
  2. Step 2: Convert to fraction form
    20,210.27/27,890.17 = 11,717.33/x
  3. Step 3: Cross multiply
    20,210.27x = 27,890.17 × 11,717.33
  4. Step 4: Simplify right side
    20,210.27x = 326,798,379.69
  5. Step 5: Solve for x
    x = 326,798,379.69/20,210.27
  6. Step 6: Final answer
    x = 16,169.92

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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.