Home / 12,984.57-17,913.87-8,728.89

Finding the Fourth Proportional to 12,984.57, 17,913.87 and 8,728.89

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Solution

The fourth proportional to 12,984.57, 17,913.87 and 8,728.89 is: 12,042.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.57 : 17,913.87 = 8,728.89 : x
  2. Step 2: Convert to fraction form
    12,984.57/17,913.87 = 8,728.89/x
  3. Step 3: Cross multiply
    12,984.57x = 17,913.87 × 8,728.89
  4. Step 4: Simplify right side
    12,984.57x = 156,368,200.70
  5. Step 5: Solve for x
    x = 156,368,200.70/12,984.57
  6. Step 6: Final answer
    x = 12,042.61

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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.