Home / 20,617.74-28,454.29-11,668.12

Finding the Fourth Proportional to 20,617.74, 28,454.29 and 11,668.12

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Solution

The fourth proportional to 20,617.74, 28,454.29 and 11,668.12 is: 16,103.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.74 : 28,454.29 = 11,668.12 : x
  2. Step 2: Convert to fraction form
    20,617.74/28,454.29 = 11,668.12/x
  3. Step 3: Cross multiply
    20,617.74x = 28,454.29 × 11,668.12
  4. Step 4: Simplify right side
    20,617.74x = 332,007,969.93
  5. Step 5: Solve for x
    x = 332,007,969.93/20,617.74
  6. Step 6: Final answer
    x = 16,103.02

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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.