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Finding the Fourth Proportional to 12,672.54, 19,012.05 and 5,274.54

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Solution

The fourth proportional to 12,672.54, 19,012.05 and 5,274.54 is: 7,913.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.54 : 19,012.05 = 5,274.54 : x
  2. Step 2: Convert to fraction form
    12,672.54/19,012.05 = 5,274.54/x
  3. Step 3: Cross multiply
    12,672.54x = 19,012.05 × 5,274.54
  4. Step 4: Simplify right side
    12,672.54x = 100,279,818.21
  5. Step 5: Solve for x
    x = 100,279,818.21/12,672.54
  6. Step 6: Final answer
    x = 7,913.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.