Home / 13,379.88-20,082.78-6,459.24

Finding the Fourth Proportional to 13,379.88, 20,082.78 and 6,459.24

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Solution

The fourth proportional to 13,379.88, 20,082.78 and 6,459.24 is: 9,695.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.88 : 20,082.78 = 6,459.24 : x
  2. Step 2: Convert to fraction form
    13,379.88/20,082.78 = 6,459.24/x
  3. Step 3: Cross multiply
    13,379.88x = 20,082.78 × 6,459.24
  4. Step 4: Simplify right side
    13,379.88x = 129,719,495.89
  5. Step 5: Solve for x
    x = 129,719,495.89/13,379.88
  6. Step 6: Final answer
    x = 9,695.12

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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.