Home / 13,358.64-20,040.78-3,999.39

Finding the Fourth Proportional to 13,358.64, 20,040.78 and 3,999.39

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Solution

The fourth proportional to 13,358.64, 20,040.78 and 3,999.39 is: 5,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.64 : 20,040.78 = 3,999.39 : x
  2. Step 2: Convert to fraction form
    13,358.64/20,040.78 = 3,999.39/x
  3. Step 3: Cross multiply
    13,358.64x = 20,040.78 × 3,999.39
  4. Step 4: Simplify right side
    13,358.64x = 80,150,895.12
  5. Step 5: Solve for x
    x = 80,150,895.12/13,358.64
  6. Step 6: Final answer
    x = 5,999.93

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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.