Home / 12,951.40-19,427.50-4,186.40

Finding the Fourth Proportional to 12,951.40, 19,427.50 and 4,186.40

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Solution

The fourth proportional to 12,951.40, 19,427.50 and 4,186.40 is: 6,279.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951.40 : 19,427.50 = 4,186.40 : x
  2. Step 2: Convert to fraction form
    12,951.40/19,427.50 = 4,186.40/x
  3. Step 3: Cross multiply
    12,951.40x = 19,427.50 × 4,186.40
  4. Step 4: Simplify right side
    12,951.40x = 81,331,286
  5. Step 5: Solve for x
    x = 81,331,286/12,951.40
  6. Step 6: Final answer
    x = 6,279.73

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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.