Home / 22,372.96-30,872.20-13,420.84

Finding the Fourth Proportional to 22,372.96, 30,872.20 and 13,420.84

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Solution

The fourth proportional to 22,372.96, 30,872.20 and 13,420.84 is: 18,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,372.96 : 30,872.20 = 13,420.84 : x
  2. Step 2: Convert to fraction form
    22,372.96/30,872.20 = 13,420.84/x
  3. Step 3: Cross multiply
    22,372.96x = 30,872.20 × 13,420.84
  4. Step 4: Simplify right side
    22,372.96x = 414,330,856.65
  5. Step 5: Solve for x
    x = 414,330,856.65/22,372.96
  6. Step 6: Final answer
    x = 18,519.27

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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.