Home / 13,103.28-18,082.62-7,135.02

Finding the Fourth Proportional to 13,103.28, 18,082.62 and 7,135.02

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Solution

The fourth proportional to 13,103.28, 18,082.62 and 7,135.02 is: 9,846.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.28 : 18,082.62 = 7,135.02 : x
  2. Step 2: Convert to fraction form
    13,103.28/18,082.62 = 7,135.02/x
  3. Step 3: Cross multiply
    13,103.28x = 18,082.62 × 7,135.02
  4. Step 4: Simplify right side
    13,103.28x = 129,019,855.35
  5. Step 5: Solve for x
    x = 129,019,855.35/13,103.28
  6. Step 6: Final answer
    x = 9,846.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.