Home / 13,429.14-20,144.11-6,409.90

Finding the Fourth Proportional to 13,429.14, 20,144.11 and 6,409.90

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Solution

The fourth proportional to 13,429.14, 20,144.11 and 6,409.90 is: 9,615.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.14 : 20,144.11 = 6,409.90 : x
  2. Step 2: Convert to fraction form
    13,429.14/20,144.11 = 6,409.90/x
  3. Step 3: Cross multiply
    13,429.14x = 20,144.11 × 6,409.90
  4. Step 4: Simplify right side
    13,429.14x = 129,121,730.69
  5. Step 5: Solve for x
    x = 129,121,730.69/13,429.14
  6. Step 6: Final answer
    x = 9,615.04

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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.