Home / 13,401.48-20,105.58-11,719.92

Finding the Fourth Proportional to 13,401.48, 20,105.58 and 11,719.92

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Solution

The fourth proportional to 13,401.48, 20,105.58 and 11,719.92 is: 17,582.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.48 : 20,105.58 = 11,719.92 : x
  2. Step 2: Convert to fraction form
    13,401.48/20,105.58 = 11,719.92/x
  3. Step 3: Cross multiply
    13,401.48x = 20,105.58 × 11,719.92
  4. Step 4: Simplify right side
    13,401.48x = 235,635,789.15
  5. Step 5: Solve for x
    x = 235,635,789.15/13,401.48
  6. Step 6: Final answer
    x = 17,582.82

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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.