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Finding the Fourth Proportional to 16,859.60, 25,310.20 and 10,619.60

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Solution

The fourth proportional to 16,859.60, 25,310.20 and 10,619.60 is: 15,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,859.60 : 25,310.20 = 10,619.60 : x
  2. Step 2: Convert to fraction form
    16,859.60/25,310.20 = 10,619.60/x
  3. Step 3: Cross multiply
    16,859.60x = 25,310.20 × 10,619.60
  4. Step 4: Simplify right side
    16,859.60x = 268,784,199.92
  5. Step 5: Solve for x
    x = 268,784,199.92/16,859.60
  6. Step 6: Final answer
    x = 15,942.50

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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.