Home / 12,122.96-18,173.43-4,329.95

Finding the Fourth Proportional to 12,122.96, 18,173.43 and 4,329.95

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Solution

The fourth proportional to 12,122.96, 18,173.43 and 4,329.95 is: 6,490.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.96 : 18,173.43 = 4,329.95 : x
  2. Step 2: Convert to fraction form
    12,122.96/18,173.43 = 4,329.95/x
  3. Step 3: Cross multiply
    12,122.96x = 18,173.43 × 4,329.95
  4. Step 4: Simplify right side
    12,122.96x = 78,689,952.36
  5. Step 5: Solve for x
    x = 78,689,952.36/12,122.96
  6. Step 6: Final answer
    x = 6,490.99

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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.