Home / 13,425.29-20,143.64-7,183.69

Finding the Fourth Proportional to 13,425.29, 20,143.64 and 7,183.69

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Solution

The fourth proportional to 13,425.29, 20,143.64 and 7,183.69 is: 10,778.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.29 : 20,143.64 = 7,183.69 : x
  2. Step 2: Convert to fraction form
    13,425.29/20,143.64 = 7,183.69/x
  3. Step 3: Cross multiply
    13,425.29x = 20,143.64 × 7,183.69
  4. Step 4: Simplify right side
    13,425.29x = 144,705,592.42
  5. Step 5: Solve for x
    x = 144,705,592.42/13,425.29
  6. Step 6: Final answer
    x = 10,778.58

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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.