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Finding the Fourth Proportional to 16,781.60, 25,150.80 and 10,200.80

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Solution

The fourth proportional to 16,781.60, 25,150.80 and 10,200.80 is: 15,288.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,781.60 : 25,150.80 = 10,200.80 : x
  2. Step 2: Convert to fraction form
    16,781.60/25,150.80 = 10,200.80/x
  3. Step 3: Cross multiply
    16,781.60x = 25,150.80 × 10,200.80
  4. Step 4: Simplify right side
    16,781.60x = 256,558,280.64
  5. Step 5: Solve for x
    x = 256,558,280.64/16,781.60
  6. Step 6: Final answer
    x = 15,288.07

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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.