Home / 22,380.62-30,885.23-12,309.21

Finding the Fourth Proportional to 22,380.62, 30,885.23 and 12,309.21

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Solution

The fourth proportional to 22,380.62, 30,885.23 and 12,309.21 is: 16,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,380.62 : 30,885.23 = 12,309.21 : x
  2. Step 2: Convert to fraction form
    22,380.62/30,885.23 = 12,309.21/x
  3. Step 3: Cross multiply
    22,380.62x = 30,885.23 × 12,309.21
  4. Step 4: Simplify right side
    22,380.62x = 380,172,812.74
  5. Step 5: Solve for x
    x = 380,172,812.74/22,380.62
  6. Step 6: Final answer
    x = 16,986.70

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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.