Home / 20,696.18-28,559.32-11,264.54

Finding the Fourth Proportional to 20,696.18, 28,559.32 and 11,264.54

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Solution

The fourth proportional to 20,696.18, 28,559.32 and 11,264.54 is: 15,544.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.18 : 28,559.32 = 11,264.54 : x
  2. Step 2: Convert to fraction form
    20,696.18/28,559.32 = 11,264.54/x
  3. Step 3: Cross multiply
    20,696.18x = 28,559.32 × 11,264.54
  4. Step 4: Simplify right side
    20,696.18x = 321,707,431.55
  5. Step 5: Solve for x
    x = 321,707,431.55/20,696.18
  6. Step 6: Final answer
    x = 15,544.29

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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.