Home / 20,775.57-28,668.94-11,344.12

Finding the Fourth Proportional to 20,775.57, 28,668.94 and 11,344.12

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Solution

The fourth proportional to 20,775.57, 28,668.94 and 11,344.12 is: 15,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.57 : 28,668.94 = 11,344.12 : x
  2. Step 2: Convert to fraction form
    20,775.57/28,668.94 = 11,344.12/x
  3. Step 3: Cross multiply
    20,775.57x = 28,668.94 × 11,344.12
  4. Step 4: Simplify right side
    20,775.57x = 325,223,895.63
  5. Step 5: Solve for x
    x = 325,223,895.63/20,775.57
  6. Step 6: Final answer
    x = 15,654.15

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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.