Home / 20,785.69-28,682.91-11,354.25

Finding the Fourth Proportional to 20,785.69, 28,682.91 and 11,354.25

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Solution

The fourth proportional to 20,785.69, 28,682.91 and 11,354.25 is: 15,668.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785.69 : 28,682.91 = 11,354.25 : x
  2. Step 2: Convert to fraction form
    20,785.69/28,682.91 = 11,354.25/x
  3. Step 3: Cross multiply
    20,785.69x = 28,682.91 × 11,354.25
  4. Step 4: Simplify right side
    20,785.69x = 325,672,930.87
  5. Step 5: Solve for x
    x = 325,672,930.87/20,785.69
  6. Step 6: Final answer
    x = 15,668.13

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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.