Home / 12,190.17-18,285.25-4,290.83

Finding the Fourth Proportional to 12,190.17, 18,285.25 and 4,290.83

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Solution

The fourth proportional to 12,190.17, 18,285.25 and 4,290.83 is: 6,436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.17 : 18,285.25 = 4,290.83 : x
  2. Step 2: Convert to fraction form
    12,190.17/18,285.25 = 4,290.83/x
  3. Step 3: Cross multiply
    12,190.17x = 18,285.25 × 4,290.83
  4. Step 4: Simplify right side
    12,190.17x = 78,458,807.83
  5. Step 5: Solve for x
    x = 78,458,807.83/12,190.17
  6. Step 6: Final answer
    x = 6,436.24

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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.