Home / 28,723.16-39,611.22-18,640.82

Finding the Fourth Proportional to 28,723.16, 39,611.22 and 18,640.82

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Solution

The fourth proportional to 28,723.16, 39,611.22 and 18,640.82 is: 25,706.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.16 : 39,611.22 = 18,640.82 : x
  2. Step 2: Convert to fraction form
    28,723.16/39,611.22 = 18,640.82/x
  3. Step 3: Cross multiply
    28,723.16x = 39,611.22 × 18,640.82
  4. Step 4: Simplify right side
    28,723.16x = 738,385,622.00
  5. Step 5: Solve for x
    x = 738,385,622.00/28,723.16
  6. Step 6: Final answer
    x = 25,706.98

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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.