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Finding the Fourth Proportional to 12,529.63, 18,710.96 and 11,800.63

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Solution

The fourth proportional to 12,529.63, 18,710.96 and 11,800.63 is: 17,622.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.63 : 18,710.96 = 11,800.63 : x
  2. Step 2: Convert to fraction form
    12,529.63/18,710.96 = 11,800.63/x
  3. Step 3: Cross multiply
    12,529.63x = 18,710.96 × 11,800.63
  4. Step 4: Simplify right side
    12,529.63x = 220,801,115.90
  5. Step 5: Solve for x
    x = 220,801,115.90/12,529.63
  6. Step 6: Final answer
    x = 17,622.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.