Home / 20,763.26-28,653.45-11,331.62

Finding the Fourth Proportional to 20,763.26, 28,653.45 and 11,331.62

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Solution

The fourth proportional to 20,763.26, 28,653.45 and 11,331.62 is: 15,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.26 : 28,653.45 = 11,331.62 : x
  2. Step 2: Convert to fraction form
    20,763.26/28,653.45 = 11,331.62/x
  3. Step 3: Cross multiply
    20,763.26x = 28,653.45 × 11,331.62
  4. Step 4: Simplify right side
    20,763.26x = 324,690,007.09
  5. Step 5: Solve for x
    x = 324,690,007.09/20,763.26
  6. Step 6: Final answer
    x = 15,637.72

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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.