Home / 12,890.82-19,333.06-4,123.92

Finding the Fourth Proportional to 12,890.82, 19,333.06 and 4,123.92

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Solution

The fourth proportional to 12,890.82, 19,333.06 and 4,123.92 is: 6,184.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.82 : 19,333.06 = 4,123.92 : x
  2. Step 2: Convert to fraction form
    12,890.82/19,333.06 = 4,123.92/x
  3. Step 3: Cross multiply
    12,890.82x = 19,333.06 × 4,123.92
  4. Step 4: Simplify right side
    12,890.82x = 79,727,992.80
  5. Step 5: Solve for x
    x = 79,727,992.80/12,890.82
  6. Step 6: Final answer
    x = 6,184.87

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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.