Home / 12,083.76-18,125.64-3,318.72

Finding the Fourth Proportional to 12,083.76, 18,125.64 and 3,318.72

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Solution

The fourth proportional to 12,083.76, 18,125.64 and 3,318.72 is: 4,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083.76 : 18,125.64 = 3,318.72 : x
  2. Step 2: Convert to fraction form
    12,083.76/18,125.64 = 3,318.72/x
  3. Step 3: Cross multiply
    12,083.76x = 18,125.64 × 3,318.72
  4. Step 4: Simplify right side
    12,083.76x = 60,153,923.98
  5. Step 5: Solve for x
    x = 60,153,923.98/12,083.76
  6. Step 6: Final answer
    x = 4,978.08

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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.