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Finding the Fourth Proportional to 14,789.77, 20,410.20 and 8,075.68

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Solution

The fourth proportional to 14,789.77, 20,410.20 and 8,075.68 is: 11,144.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.77 : 20,410.20 = 8,075.68 : x
  2. Step 2: Convert to fraction form
    14,789.77/20,410.20 = 8,075.68/x
  3. Step 3: Cross multiply
    14,789.77x = 20,410.20 × 8,075.68
  4. Step 4: Simplify right side
    14,789.77x = 164,826,243.94
  5. Step 5: Solve for x
    x = 164,826,243.94/14,789.77
  6. Step 6: Final answer
    x = 11,144.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.