Home / 12,438.14-17,165.85-9,288.86

Finding the Fourth Proportional to 12,438.14, 17,165.85 and 9,288.86

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Solution

The fourth proportional to 12,438.14, 17,165.85 and 9,288.86 is: 12,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.14 : 17,165.85 = 9,288.86 : x
  2. Step 2: Convert to fraction form
    12,438.14/17,165.85 = 9,288.86/x
  3. Step 3: Cross multiply
    12,438.14x = 17,165.85 × 9,288.86
  4. Step 4: Simplify right side
    12,438.14x = 159,451,177.43
  5. Step 5: Solve for x
    x = 159,451,177.43/12,438.14
  6. Step 6: Final answer
    x = 12,819.54

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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.