Home / 12,285.80-18,431.36-3,966.28

Finding the Fourth Proportional to 12,285.80, 18,431.36 and 3,966.28

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Solution

The fourth proportional to 12,285.80, 18,431.36 and 3,966.28 is: 5,950.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.80 : 18,431.36 = 3,966.28 : x
  2. Step 2: Convert to fraction form
    12,285.80/18,431.36 = 3,966.28/x
  3. Step 3: Cross multiply
    12,285.80x = 18,431.36 × 3,966.28
  4. Step 4: Simplify right side
    12,285.80x = 73,103,934.54
  5. Step 5: Solve for x
    x = 73,103,934.54/12,285.80
  6. Step 6: Final answer
    x = 5,950.28

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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.