Home / 16,811.60-25,207.80-6,939.20

Finding the Fourth Proportional to 16,811.60, 25,207.80 and 6,939.20

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Solution

The fourth proportional to 16,811.60, 25,207.80 and 6,939.20 is: 10,404.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.60 : 25,207.80 = 6,939.20 : x
  2. Step 2: Convert to fraction form
    16,811.60/25,207.80 = 6,939.20/x
  3. Step 3: Cross multiply
    16,811.60x = 25,207.80 × 6,939.20
  4. Step 4: Simplify right side
    16,811.60x = 174,921,965.76
  5. Step 5: Solve for x
    x = 174,921,965.76/16,811.60
  6. Step 6: Final answer
    x = 10,404.84

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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.