Home / 12,267.20-18,400.80-8,580.80

Finding the Fourth Proportional to 12,267.20, 18,400.80 and 8,580.80

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Solution

The fourth proportional to 12,267.20, 18,400.80 and 8,580.80 is: 12,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,267.20 : 18,400.80 = 8,580.80 : x
  2. Step 2: Convert to fraction form
    12,267.20/18,400.80 = 8,580.80/x
  3. Step 3: Cross multiply
    12,267.20x = 18,400.80 × 8,580.80
  4. Step 4: Simplify right side
    12,267.20x = 157,893,584.64
  5. Step 5: Solve for x
    x = 157,893,584.64/12,267.20
  6. Step 6: Final answer
    x = 12,871.20

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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.