Home / 12,836.52-19,229.70-8,440.68

Finding the Fourth Proportional to 12,836.52, 19,229.70 and 8,440.68

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Solution

The fourth proportional to 12,836.52, 19,229.70 and 8,440.68 is: 12,644.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.52 : 19,229.70 = 8,440.68 : x
  2. Step 2: Convert to fraction form
    12,836.52/19,229.70 = 8,440.68/x
  3. Step 3: Cross multiply
    12,836.52x = 19,229.70 × 8,440.68
  4. Step 4: Simplify right side
    12,836.52x = 162,311,744.20
  5. Step 5: Solve for x
    x = 162,311,744.20/12,836.52
  6. Step 6: Final answer
    x = 12,644.53

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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.