Home / 13,789.68-20,684.34-3,401.46

Finding the Fourth Proportional to 13,789.68, 20,684.34 and 3,401.46

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Solution

The fourth proportional to 13,789.68, 20,684.34 and 3,401.46 is: 5,102.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.68 : 20,684.34 = 3,401.46 : x
  2. Step 2: Convert to fraction form
    13,789.68/20,684.34 = 3,401.46/x
  3. Step 3: Cross multiply
    13,789.68x = 20,684.34 × 3,401.46
  4. Step 4: Simplify right side
    13,789.68x = 70,356,955.14
  5. Step 5: Solve for x
    x = 70,356,955.14/13,789.68
  6. Step 6: Final answer
    x = 5,102.15

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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.