Home / 20,941.38-28,899.71-11,510.55

Finding the Fourth Proportional to 20,941.38, 28,899.71 and 11,510.55

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Solution

The fourth proportional to 20,941.38, 28,899.71 and 11,510.55 is: 15,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.38 : 28,899.71 = 11,510.55 : x
  2. Step 2: Convert to fraction form
    20,941.38/28,899.71 = 11,510.55/x
  3. Step 3: Cross multiply
    20,941.38x = 28,899.71 × 11,510.55
  4. Step 4: Simplify right side
    20,941.38x = 332,651,556.94
  5. Step 5: Solve for x
    x = 332,651,556.94/20,941.38
  6. Step 6: Final answer
    x = 15,884.89

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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.