Home / 28,379.18-39,150.09-18,310.85

Finding the Fourth Proportional to 28,379.18, 39,150.09 and 18,310.85

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Solution

The fourth proportional to 28,379.18, 39,150.09 and 18,310.85 is: 25,260.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.18 : 39,150.09 = 18,310.85 : x
  2. Step 2: Convert to fraction form
    28,379.18/39,150.09 = 18,310.85/x
  3. Step 3: Cross multiply
    28,379.18x = 39,150.09 × 18,310.85
  4. Step 4: Simplify right side
    28,379.18x = 716,871,229.73
  5. Step 5: Solve for x
    x = 716,871,229.73/28,379.18
  6. Step 6: Final answer
    x = 25,260.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.