Home / 12,103.99-18,159.63-4,311.79

Finding the Fourth Proportional to 12,103.99, 18,159.63 and 4,311.79

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Solution

The fourth proportional to 12,103.99, 18,159.63 and 4,311.79 is: 6,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.99 : 18,159.63 = 4,311.79 : x
  2. Step 2: Convert to fraction form
    12,103.99/18,159.63 = 4,311.79/x
  3. Step 3: Cross multiply
    12,103.99x = 18,159.63 × 4,311.79
  4. Step 4: Simplify right side
    12,103.99x = 78,300,511.04
  5. Step 5: Solve for x
    x = 78,300,511.04/12,103.99
  6. Step 6: Final answer
    x = 6,468.98

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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.