Home / 12,855.72-19,279.45-4,088.58

Finding the Fourth Proportional to 12,855.72, 19,279.45 and 4,088.58

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Solution

The fourth proportional to 12,855.72, 19,279.45 and 4,088.58 is: 6,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.72 : 19,279.45 = 4,088.58 : x
  2. Step 2: Convert to fraction form
    12,855.72/19,279.45 = 4,088.58/x
  3. Step 3: Cross multiply
    12,855.72x = 19,279.45 × 4,088.58
  4. Step 4: Simplify right side
    12,855.72x = 78,825,553.24
  5. Step 5: Solve for x
    x = 78,825,553.24/12,855.72
  6. Step 6: Final answer
    x = 6,131.55

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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.