Home / 12,869.61-19,307.42-4,103.85

Finding the Fourth Proportional to 12,869.61, 19,307.42 and 4,103.85

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Solution

The fourth proportional to 12,869.61, 19,307.42 and 4,103.85 is: 6,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.61 : 19,307.42 = 4,103.85 : x
  2. Step 2: Convert to fraction form
    12,869.61/19,307.42 = 4,103.85/x
  3. Step 3: Cross multiply
    12,869.61x = 19,307.42 × 4,103.85
  4. Step 4: Simplify right side
    12,869.61x = 79,234,735.05
  5. Step 5: Solve for x
    x = 79,234,735.05/12,869.61
  6. Step 6: Final answer
    x = 6,156.73

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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.