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Finding the Fourth Proportional to 16,789.60, 25,162.80 and 10,208.80

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Solution

The fourth proportional to 16,789.60, 25,162.80 and 10,208.80 is: 15,300.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,789.60 : 25,162.80 = 10,208.80 : x
  2. Step 2: Convert to fraction form
    16,789.60/25,162.80 = 10,208.80/x
  3. Step 3: Cross multiply
    16,789.60x = 25,162.80 × 10,208.80
  4. Step 4: Simplify right side
    16,789.60x = 256,881,992.64
  5. Step 5: Solve for x
    x = 256,881,992.64/16,789.60
  6. Step 6: Final answer
    x = 15,300.07

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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.