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Finding the Fourth Proportional to 18,763.45, 25,900.07 and 10,808.84

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Solution

The fourth proportional to 18,763.45, 25,900.07 and 10,808.84 is: 14,919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.45 : 25,900.07 = 10,808.84 : x
  2. Step 2: Convert to fraction form
    18,763.45/25,900.07 = 10,808.84/x
  3. Step 3: Cross multiply
    18,763.45x = 25,900.07 × 10,808.84
  4. Step 4: Simplify right side
    18,763.45x = 279,949,723.32
  5. Step 5: Solve for x
    x = 279,949,723.32/18,763.45
  6. Step 6: Final answer
    x = 14,919.95

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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.