Home / 20,651.05-28,498.52-11,700.21

Finding the Fourth Proportional to 20,651.05, 28,498.52 and 11,700.21

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Solution

The fourth proportional to 20,651.05, 28,498.52 and 11,700.21 is: 16,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.05 : 28,498.52 = 11,700.21 : x
  2. Step 2: Convert to fraction form
    20,651.05/28,498.52 = 11,700.21/x
  3. Step 3: Cross multiply
    20,651.05x = 28,498.52 × 11,700.21
  4. Step 4: Simplify right side
    20,651.05x = 333,438,668.69
  5. Step 5: Solve for x
    x = 333,438,668.69/20,651.05
  6. Step 6: Final answer
    x = 16,146.33

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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.