Home / 13,405.24-20,105.14-5,082.40

Finding the Fourth Proportional to 13,405.24, 20,105.14 and 5,082.40

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Solution

The fourth proportional to 13,405.24, 20,105.14 and 5,082.40 is: 7,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.24 : 20,105.14 = 5,082.40 : x
  2. Step 2: Convert to fraction form
    13,405.24/20,105.14 = 5,082.40/x
  3. Step 3: Cross multiply
    13,405.24x = 20,105.14 × 5,082.40
  4. Step 4: Simplify right side
    13,405.24x = 102,182,363.54
  5. Step 5: Solve for x
    x = 102,182,363.54/13,405.24
  6. Step 6: Final answer
    x = 7,622.57

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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.