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Finding the Fourth Proportional to 12,550.86, 18,787.41 and 7,366.86

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Solution

The fourth proportional to 12,550.86, 18,787.41 and 7,366.86 is: 11,027.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,550.86 : 18,787.41 = 7,366.86 : x
  2. Step 2: Convert to fraction form
    12,550.86/18,787.41 = 7,366.86/x
  3. Step 3: Cross multiply
    12,550.86x = 18,787.41 × 7,366.86
  4. Step 4: Simplify right side
    12,550.86x = 138,404,219.23
  5. Step 5: Solve for x
    x = 138,404,219.23/12,550.86
  6. Step 6: Final answer
    x = 11,027.47

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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.