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Finding the Fourth Proportional to 12,358.56, 18,540.48 and 3,593.28

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Solution

The fourth proportional to 12,358.56, 18,540.48 and 3,593.28 is: 5,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358.56 : 18,540.48 = 3,593.28 : x
  2. Step 2: Convert to fraction form
    12,358.56/18,540.48 = 3,593.28/x
  3. Step 3: Cross multiply
    12,358.56x = 18,540.48 × 3,593.28
  4. Step 4: Simplify right side
    12,358.56x = 66,621,135.97
  5. Step 5: Solve for x
    x = 66,621,135.97/12,358.56
  6. Step 6: Final answer
    x = 5,390.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.