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Finding the Fourth Proportional to 12,644.14, 18,950.85 and 8,947.45

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Solution

The fourth proportional to 12,644.14, 18,950.85 and 8,947.45 is: 13,410.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,644.14 : 18,950.85 = 8,947.45 : x
  2. Step 2: Convert to fraction form
    12,644.14/18,950.85 = 8,947.45/x
  3. Step 3: Cross multiply
    12,644.14x = 18,950.85 × 8,947.45
  4. Step 4: Simplify right side
    12,644.14x = 169,561,782.83
  5. Step 5: Solve for x
    x = 169,561,782.83/12,644.14
  6. Step 6: Final answer
    x = 13,410.31

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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.