Home / 28,704.89-39,612.57-16,129.64

Finding the Fourth Proportional to 28,704.89, 39,612.57 and 16,129.64

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Solution

The fourth proportional to 28,704.89, 39,612.57 and 16,129.64 is: 22,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,704.89 : 39,612.57 = 16,129.64 : x
  2. Step 2: Convert to fraction form
    28,704.89/39,612.57 = 16,129.64/x
  3. Step 3: Cross multiply
    28,704.89x = 39,612.57 × 16,129.64
  4. Step 4: Simplify right side
    28,704.89x = 638,936,493.57
  5. Step 5: Solve for x
    x = 638,936,493.57/28,704.89
  6. Step 6: Final answer
    x = 22,258.80

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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.