Home / 10,767.20-16,131.60-8,808.80

Finding the Fourth Proportional to 10,767.20, 16,131.60 and 8,808.80

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Solution

The fourth proportional to 10,767.20, 16,131.60 and 8,808.80 is: 13,197.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,767.20 : 16,131.60 = 8,808.80 : x
  2. Step 2: Convert to fraction form
    10,767.20/16,131.60 = 8,808.80/x
  3. Step 3: Cross multiply
    10,767.20x = 16,131.60 × 8,808.80
  4. Step 4: Simplify right side
    10,767.20x = 142,100,038.08
  5. Step 5: Solve for x
    x = 142,100,038.08/10,767.20
  6. Step 6: Final answer
    x = 13,197.49

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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.