Home / 12,428.70-18,630.45-6,179.10

Finding the Fourth Proportional to 12,428.70, 18,630.45 and 6,179.10

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Solution

The fourth proportional to 12,428.70, 18,630.45 and 6,179.10 is: 9,262.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.70 : 18,630.45 = 6,179.10 : x
  2. Step 2: Convert to fraction form
    12,428.70/18,630.45 = 6,179.10/x
  3. Step 3: Cross multiply
    12,428.70x = 18,630.45 × 6,179.10
  4. Step 4: Simplify right side
    12,428.70x = 115,119,413.60
  5. Step 5: Solve for x
    x = 115,119,413.60/12,428.70
  6. Step 6: Final answer
    x = 9,262.39

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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.