Home / 11,538.45-17,308.69-8,456.81

Finding the Fourth Proportional to 11,538.45, 17,308.69 and 8,456.81

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Solution

The fourth proportional to 11,538.45, 17,308.69 and 8,456.81 is: 12,685.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,538.45 : 17,308.69 = 8,456.81 : x
  2. Step 2: Convert to fraction form
    11,538.45/17,308.69 = 8,456.81/x
  3. Step 3: Cross multiply
    11,538.45x = 17,308.69 × 8,456.81
  4. Step 4: Simplify right side
    11,538.45x = 146,376,194.99
  5. Step 5: Solve for x
    x = 146,376,194.99/11,538.45
  6. Step 6: Final answer
    x = 12,685.95

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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.