Home / 20,696.78-28,548.60-17,238.44

Finding the Fourth Proportional to 20,696.78, 28,548.60 and 17,238.44

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Solution

The fourth proportional to 20,696.78, 28,548.60 and 17,238.44 is: 23,778.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.78 : 28,548.60 = 17,238.44 : x
  2. Step 2: Convert to fraction form
    20,696.78/28,548.60 = 17,238.44/x
  3. Step 3: Cross multiply
    20,696.78x = 28,548.60 × 17,238.44
  4. Step 4: Simplify right side
    20,696.78x = 492,133,328.18
  5. Step 5: Solve for x
    x = 492,133,328.18/20,696.78
  6. Step 6: Final answer
    x = 23,778.26

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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.