Home / 13,103.42-18,083.12-7,134.71

Finding the Fourth Proportional to 13,103.42, 18,083.12 and 7,134.71

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Solution

The fourth proportional to 13,103.42, 18,083.12 and 7,134.71 is: 9,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.42 : 18,083.12 = 7,134.71 : x
  2. Step 2: Convert to fraction form
    13,103.42/18,083.12 = 7,134.71/x
  3. Step 3: Cross multiply
    13,103.42x = 18,083.12 × 7,134.71
  4. Step 4: Simplify right side
    13,103.42x = 129,017,691.01
  5. Step 5: Solve for x
    x = 129,017,691.01/13,103.42
  6. Step 6: Final answer
    x = 9,846.11

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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.