Home / 11,201.60-16,802.40-8,292.80

Finding the Fourth Proportional to 11,201.60, 16,802.40 and 8,292.80

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Solution

The fourth proportional to 11,201.60, 16,802.40 and 8,292.80 is: 12,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,201.60 : 16,802.40 = 8,292.80 : x
  2. Step 2: Convert to fraction form
    11,201.60/16,802.40 = 8,292.80/x
  3. Step 3: Cross multiply
    11,201.60x = 16,802.40 × 8,292.80
  4. Step 4: Simplify right side
    11,201.60x = 139,338,942.72
  5. Step 5: Solve for x
    x = 139,338,942.72/11,201.60
  6. Step 6: Final answer
    x = 12,439.20

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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.