Home / 22,380.35-30,885.65-12,309.55

Finding the Fourth Proportional to 22,380.35, 30,885.65 and 12,309.55

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Solution

The fourth proportional to 22,380.35, 30,885.65 and 12,309.55 is: 16,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,380.35 : 30,885.65 = 12,309.55 : x
  2. Step 2: Convert to fraction form
    22,380.35/30,885.65 = 12,309.55/x
  3. Step 3: Cross multiply
    22,380.35x = 30,885.65 × 12,309.55
  4. Step 4: Simplify right side
    22,380.35x = 380,188,375.74
  5. Step 5: Solve for x
    x = 380,188,375.74/22,380.35
  6. Step 6: Final answer
    x = 16,987.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.