Home / 20,941.38-28,899.10-11,509.94

Finding the Fourth Proportional to 20,941.38, 28,899.10 and 11,509.94

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Solution

The fourth proportional to 20,941.38, 28,899.10 and 11,509.94 is: 15,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.38 : 28,899.10 = 11,509.94 : x
  2. Step 2: Convert to fraction form
    20,941.38/28,899.10 = 11,509.94/x
  3. Step 3: Cross multiply
    20,941.38x = 28,899.10 × 11,509.94
  4. Step 4: Simplify right side
    20,941.38x = 332,626,907.05
  5. Step 5: Solve for x
    x = 332,626,907.05/20,941.38
  6. Step 6: Final answer
    x = 15,883.71

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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.