Home / 11,259.20-16,893.60-5,412.80

Finding the Fourth Proportional to 11,259.20, 16,893.60 and 5,412.80

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Solution

The fourth proportional to 11,259.20, 16,893.60 and 5,412.80 is: 8,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,259.20 : 16,893.60 = 5,412.80 : x
  2. Step 2: Convert to fraction form
    11,259.20/16,893.60 = 5,412.80/x
  3. Step 3: Cross multiply
    11,259.20x = 16,893.60 × 5,412.80
  4. Step 4: Simplify right side
    11,259.20x = 91,441,678.08
  5. Step 5: Solve for x
    x = 91,441,678.08/11,259.20
  6. Step 6: Final answer
    x = 8,121.51

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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.