Home / 12,656.45-18,984.68-4,859.80

Finding the Fourth Proportional to 12,656.45, 18,984.68 and 4,859.80

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Solution

The fourth proportional to 12,656.45, 18,984.68 and 4,859.80 is: 7,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.45 : 18,984.68 = 4,859.80 : x
  2. Step 2: Convert to fraction form
    12,656.45/18,984.68 = 4,859.80/x
  3. Step 3: Cross multiply
    12,656.45x = 18,984.68 × 4,859.80
  4. Step 4: Simplify right side
    12,656.45x = 92,261,694.33
  5. Step 5: Solve for x
    x = 92,261,694.33/12,656.45
  6. Step 6: Final answer
    x = 7,289.70

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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.