Home / 21,622.32-29,835.24-12,190.68

Finding the Fourth Proportional to 21,622.32, 29,835.24 and 12,190.68

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Solution

The fourth proportional to 21,622.32, 29,835.24 and 12,190.68 is: 16,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.32 : 29,835.24 = 12,190.68 : x
  2. Step 2: Convert to fraction form
    21,622.32/29,835.24 = 12,190.68/x
  3. Step 3: Cross multiply
    21,622.32x = 29,835.24 × 12,190.68
  4. Step 4: Simplify right side
    21,622.32x = 363,711,863.56
  5. Step 5: Solve for x
    x = 363,711,863.56/21,622.32
  6. Step 6: Final answer
    x = 16,821.13

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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.