Home / 12,220.94-18,332.04-3,455.12

Finding the Fourth Proportional to 12,220.94, 18,332.04 and 3,455.12

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Solution

The fourth proportional to 12,220.94, 18,332.04 and 3,455.12 is: 5,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.94 : 18,332.04 = 3,455.12 : x
  2. Step 2: Convert to fraction form
    12,220.94/18,332.04 = 3,455.12/x
  3. Step 3: Cross multiply
    12,220.94x = 18,332.04 × 3,455.12
  4. Step 4: Simplify right side
    12,220.94x = 63,339,398.04
  5. Step 5: Solve for x
    x = 63,339,398.04/12,220.94
  6. Step 6: Final answer
    x = 5,182.86

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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.