Home / 11,705.60-17,558.40-2,940.80

Finding the Fourth Proportional to 11,705.60, 17,558.40 and 2,940.80

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Solution

The fourth proportional to 11,705.60, 17,558.40 and 2,940.80 is: 4,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.60 : 17,558.40 = 2,940.80 : x
  2. Step 2: Convert to fraction form
    11,705.60/17,558.40 = 2,940.80/x
  3. Step 3: Cross multiply
    11,705.60x = 17,558.40 × 2,940.80
  4. Step 4: Simplify right side
    11,705.60x = 51,635,742.72
  5. Step 5: Solve for x
    x = 51,635,742.72/11,705.60
  6. Step 6: Final answer
    x = 4,411.20

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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.