Home / 22,380.76-30,885.66-12,309.26

Finding the Fourth Proportional to 22,380.76, 30,885.66 and 12,309.26

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Solution

The fourth proportional to 22,380.76, 30,885.66 and 12,309.26 is: 16,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,380.76 : 30,885.66 = 12,309.26 : x
  2. Step 2: Convert to fraction form
    22,380.76/30,885.66 = 12,309.26/x
  3. Step 3: Cross multiply
    22,380.76x = 30,885.66 × 12,309.26
  4. Step 4: Simplify right side
    22,380.76x = 380,179,619.21
  5. Step 5: Solve for x
    x = 380,179,619.21/22,380.76
  6. Step 6: Final answer
    x = 16,986.89

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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.