Home / 11,835.20-17,752.80-8,148.80

Finding the Fourth Proportional to 11,835.20, 17,752.80 and 8,148.80

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Solution

The fourth proportional to 11,835.20, 17,752.80 and 8,148.80 is: 12,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,835.20 : 17,752.80 = 8,148.80 : x
  2. Step 2: Convert to fraction form
    11,835.20/17,752.80 = 8,148.80/x
  3. Step 3: Cross multiply
    11,835.20x = 17,752.80 × 8,148.80
  4. Step 4: Simplify right side
    11,835.20x = 144,664,016.64
  5. Step 5: Solve for x
    x = 144,664,016.64/11,835.20
  6. Step 6: Final answer
    x = 12,223.20

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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.