Home / 28,766.16-39,687.78-16,821.04

Finding the Fourth Proportional to 28,766.16, 39,687.78 and 16,821.04

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Solution

The fourth proportional to 28,766.16, 39,687.78 and 16,821.04 is: 23,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.16 : 39,687.78 = 16,821.04 : x
  2. Step 2: Convert to fraction form
    28,766.16/39,687.78 = 16,821.04/x
  3. Step 3: Cross multiply
    28,766.16x = 39,687.78 × 16,821.04
  4. Step 4: Simplify right side
    28,766.16x = 667,589,734.89
  5. Step 5: Solve for x
    x = 667,589,734.89/28,766.16
  6. Step 6: Final answer
    x = 23,207.47

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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.