Home / 12,189.54-18,285.02-3,425.14

Finding the Fourth Proportional to 12,189.54, 18,285.02 and 3,425.14

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Solution

The fourth proportional to 12,189.54, 18,285.02 and 3,425.14 is: 5,137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.54 : 18,285.02 = 3,425.14 : x
  2. Step 2: Convert to fraction form
    12,189.54/18,285.02 = 3,425.14/x
  3. Step 3: Cross multiply
    12,189.54x = 18,285.02 × 3,425.14
  4. Step 4: Simplify right side
    12,189.54x = 62,628,753.40
  5. Step 5: Solve for x
    x = 62,628,753.40/12,189.54
  6. Step 6: Final answer
    x = 5,137.91

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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.