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Finding the Fourth Proportional to 12,524.31, 18,780.62 and 7,260.83

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Solution

The fourth proportional to 12,524.31, 18,780.62 and 7,260.83 is: 10,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,524.31 : 18,780.62 = 7,260.83 : x
  2. Step 2: Convert to fraction form
    12,524.31/18,780.62 = 7,260.83/x
  3. Step 3: Cross multiply
    12,524.31x = 18,780.62 × 7,260.83
  4. Step 4: Simplify right side
    12,524.31x = 136,362,813.36
  5. Step 5: Solve for x
    x = 136,362,813.36/12,524.31
  6. Step 6: Final answer
    x = 10,887.85

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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.