Home / 20,617.26-28,451.57-11,185.76

Finding the Fourth Proportional to 20,617.26, 28,451.57 and 11,185.76

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Solution

The fourth proportional to 20,617.26, 28,451.57 and 11,185.76 is: 15,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.26 : 28,451.57 = 11,185.76 : x
  2. Step 2: Convert to fraction form
    20,617.26/28,451.57 = 11,185.76/x
  3. Step 3: Cross multiply
    20,617.26x = 28,451.57 × 11,185.76
  4. Step 4: Simplify right side
    20,617.26x = 318,252,235.46
  5. Step 5: Solve for x
    x = 318,252,235.46/20,617.26
  6. Step 6: Final answer
    x = 15,436.20

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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.