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Finding the Fourth Proportional to 14,874.87, 20,525.81 and 8,906.39

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Solution

The fourth proportional to 14,874.87, 20,525.81 and 8,906.39 is: 12,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,874.87 : 20,525.81 = 8,906.39 : x
  2. Step 2: Convert to fraction form
    14,874.87/20,525.81 = 8,906.39/x
  3. Step 3: Cross multiply
    14,874.87x = 20,525.81 × 8,906.39
  4. Step 4: Simplify right side
    14,874.87x = 182,810,798.74
  5. Step 5: Solve for x
    x = 182,810,798.74/14,874.87
  6. Step 6: Final answer
    x = 12,289.91

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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.