Home / 12,383.18-18,579.39-4,989.73

Finding the Fourth Proportional to 12,383.18, 18,579.39 and 4,989.73

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Solution

The fourth proportional to 12,383.18, 18,579.39 and 4,989.73 is: 7,486.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.18 : 18,579.39 = 4,989.73 : x
  2. Step 2: Convert to fraction form
    12,383.18/18,579.39 = 4,989.73/x
  3. Step 3: Cross multiply
    12,383.18x = 18,579.39 × 4,989.73
  4. Step 4: Simplify right side
    12,383.18x = 92,706,139.66
  5. Step 5: Solve for x
    x = 92,706,139.66/12,383.18
  6. Step 6: Final answer
    x = 7,486.46

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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.