Home / 13,389.78-20,080.77-4,027.38

Finding the Fourth Proportional to 13,389.78, 20,080.77 and 4,027.38

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Solution

The fourth proportional to 13,389.78, 20,080.77 and 4,027.38 is: 6,039.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.78 : 20,080.77 = 4,027.38 : x
  2. Step 2: Convert to fraction form
    13,389.78/20,080.77 = 4,027.38/x
  3. Step 3: Cross multiply
    13,389.78x = 20,080.77 × 4,027.38
  4. Step 4: Simplify right side
    13,389.78x = 80,872,891.48
  5. Step 5: Solve for x
    x = 80,872,891.48/13,389.78
  6. Step 6: Final answer
    x = 6,039.90

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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.