Home / 12,859.80-19,286.10-4,097.40

Finding the Fourth Proportional to 12,859.80, 19,286.10 and 4,097.40

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Solution

The fourth proportional to 12,859.80, 19,286.10 and 4,097.40 is: 6,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.80 : 19,286.10 = 4,097.40 : x
  2. Step 2: Convert to fraction form
    12,859.80/19,286.10 = 4,097.40/x
  3. Step 3: Cross multiply
    12,859.80x = 19,286.10 × 4,097.40
  4. Step 4: Simplify right side
    12,859.80x = 79,022,866.14
  5. Step 5: Solve for x
    x = 79,022,866.14/12,859.80
  6. Step 6: Final answer
    x = 6,144.95

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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.