Home / 30,556.60-42,168.54-18,620.44

Finding the Fourth Proportional to 30,556.60, 42,168.54 and 18,620.44

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Solution

The fourth proportional to 30,556.60, 42,168.54 and 18,620.44 is: 25,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,556.60 : 42,168.54 = 18,620.44 : x
  2. Step 2: Convert to fraction form
    30,556.60/42,168.54 = 18,620.44/x
  3. Step 3: Cross multiply
    30,556.60x = 42,168.54 × 18,620.44
  4. Step 4: Simplify right side
    30,556.60x = 785,196,768.96
  5. Step 5: Solve for x
    x = 785,196,768.96/30,556.60
  6. Step 6: Final answer
    x = 25,696.47

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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.