Home / 12,289.11-18,401.54-6,730.89

Finding the Fourth Proportional to 12,289.11, 18,401.54 and 6,730.89

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Solution

The fourth proportional to 12,289.11, 18,401.54 and 6,730.89 is: 10,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.11 : 18,401.54 = 6,730.89 : x
  2. Step 2: Convert to fraction form
    12,289.11/18,401.54 = 6,730.89/x
  3. Step 3: Cross multiply
    12,289.11x = 18,401.54 × 6,730.89
  4. Step 4: Simplify right side
    12,289.11x = 123,858,707.92
  5. Step 5: Solve for x
    x = 123,858,707.92/12,289.11
  6. Step 6: Final answer
    x = 10,078.74

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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.