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Finding the Fourth Proportional to 12,750.76, 18,997.99 and 12,034.55

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Solution

The fourth proportional to 12,750.76, 18,997.99 and 12,034.55 is: 17,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.76 : 18,997.99 = 12,034.55 : x
  2. Step 2: Convert to fraction form
    12,750.76/18,997.99 = 12,034.55/x
  3. Step 3: Cross multiply
    12,750.76x = 18,997.99 × 12,034.55
  4. Step 4: Simplify right side
    12,750.76x = 228,632,105.39
  5. Step 5: Solve for x
    x = 228,632,105.39/12,750.76
  6. Step 6: Final answer
    x = 17,930.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.