Home / 13,103.19-18,082.71-7,135.19

Finding the Fourth Proportional to 13,103.19, 18,082.71 and 7,135.19

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Solution

The fourth proportional to 13,103.19, 18,082.71 and 7,135.19 is: 9,846.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.19 : 18,082.71 = 7,135.19 : x
  2. Step 2: Convert to fraction form
    13,103.19/18,082.71 = 7,135.19/x
  3. Step 3: Cross multiply
    13,103.19x = 18,082.71 × 7,135.19
  4. Step 4: Simplify right side
    13,103.19x = 129,023,481.15
  5. Step 5: Solve for x
    x = 129,023,481.15/13,103.19
  6. Step 6: Final answer
    x = 9,846.72

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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.