Home / 10,786.80-16,180.20-8,583.60

Finding the Fourth Proportional to 10,786.80, 16,180.20 and 8,583.60

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Solution

The fourth proportional to 10,786.80, 16,180.20 and 8,583.60 is: 12,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.80 : 16,180.20 = 8,583.60 : x
  2. Step 2: Convert to fraction form
    10,786.80/16,180.20 = 8,583.60/x
  3. Step 3: Cross multiply
    10,786.80x = 16,180.20 × 8,583.60
  4. Step 4: Simplify right side
    10,786.80x = 138,884,364.72
  5. Step 5: Solve for x
    x = 138,884,364.72/10,786.80
  6. Step 6: Final answer
    x = 12,875.40

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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.