Home / 12,220.25-18,339.58-8,941.80

Finding the Fourth Proportional to 12,220.25, 18,339.58 and 8,941.80

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Solution

The fourth proportional to 12,220.25, 18,339.58 and 8,941.80 is: 13,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.25 : 18,339.58 = 8,941.80 : x
  2. Step 2: Convert to fraction form
    12,220.25/18,339.58 = 8,941.80/x
  3. Step 3: Cross multiply
    12,220.25x = 18,339.58 × 8,941.80
  4. Step 4: Simplify right side
    12,220.25x = 163,988,856.44
  5. Step 5: Solve for x
    x = 163,988,856.44/12,220.25
  6. Step 6: Final answer
    x = 13,419.44

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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.