Home / 20,775.29-28,668.87-11,823.57

Finding the Fourth Proportional to 20,775.29, 28,668.87 and 11,823.57

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Solution

The fourth proportional to 20,775.29, 28,668.87 and 11,823.57 is: 16,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.29 : 28,668.87 = 11,823.57 : x
  2. Step 2: Convert to fraction form
    20,775.29/28,668.87 = 11,823.57/x
  3. Step 3: Cross multiply
    20,775.29x = 28,668.87 × 11,823.57
  4. Step 4: Simplify right side
    20,775.29x = 338,968,391.27
  5. Step 5: Solve for x
    x = 338,968,391.27/20,775.29
  6. Step 6: Final answer
    x = 16,315.94

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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.