Home / 13,402.38-20,103.87-5,086.31

Finding the Fourth Proportional to 13,402.38, 20,103.87 and 5,086.31

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Solution

The fourth proportional to 13,402.38, 20,103.87 and 5,086.31 is: 7,629.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.38 : 20,103.87 = 5,086.31 : x
  2. Step 2: Convert to fraction form
    13,402.38/20,103.87 = 5,086.31/x
  3. Step 3: Cross multiply
    13,402.38x = 20,103.87 × 5,086.31
  4. Step 4: Simplify right side
    13,402.38x = 102,254,515.02
  5. Step 5: Solve for x
    x = 102,254,515.02/13,402.38
  6. Step 6: Final answer
    x = 7,629.58

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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.