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Finding the Fourth Proportional to 12,761.52, 19,128.48 and 6,173.76

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Solution

The fourth proportional to 12,761.52, 19,128.48 and 6,173.76 is: 9,253.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.52 : 19,128.48 = 6,173.76 : x
  2. Step 2: Convert to fraction form
    12,761.52/19,128.48 = 6,173.76/x
  3. Step 3: Cross multiply
    12,761.52x = 19,128.48 × 6,173.76
  4. Step 4: Simplify right side
    12,761.52x = 118,094,644.68
  5. Step 5: Solve for x
    x = 118,094,644.68/12,761.52
  6. Step 6: Final answer
    x = 9,253.96

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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.