Home / 12,926.35-17,838.53-7,620.85

Finding the Fourth Proportional to 12,926.35, 17,838.53 and 7,620.85

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Solution

The fourth proportional to 12,926.35, 17,838.53 and 7,620.85 is: 10,516.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.35 : 17,838.53 = 7,620.85 : x
  2. Step 2: Convert to fraction form
    12,926.35/17,838.53 = 7,620.85/x
  3. Step 3: Cross multiply
    12,926.35x = 17,838.53 × 7,620.85
  4. Step 4: Simplify right side
    12,926.35x = 135,944,761.35
  5. Step 5: Solve for x
    x = 135,944,761.35/12,926.35
  6. Step 6: Final answer
    x = 10,516.87

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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.