Home / 22,015.43-30,381.11-12,455.37

Finding the Fourth Proportional to 22,015.43, 30,381.11 and 12,455.37

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Solution

The fourth proportional to 22,015.43, 30,381.11 and 12,455.37 is: 17,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,015.43 : 30,381.11 = 12,455.37 : x
  2. Step 2: Convert to fraction form
    22,015.43/30,381.11 = 12,455.37/x
  3. Step 3: Cross multiply
    22,015.43x = 30,381.11 × 12,455.37
  4. Step 4: Simplify right side
    22,015.43x = 378,407,950.49
  5. Step 5: Solve for x
    x = 378,407,950.49/22,015.43
  6. Step 6: Final answer
    x = 17,188.31

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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.