Home / 21,102.46-29,120.52-12,150.88

Finding the Fourth Proportional to 21,102.46, 29,120.52 and 12,150.88

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Solution

The fourth proportional to 21,102.46, 29,120.52 and 12,150.88 is: 16,767.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.46 : 29,120.52 = 12,150.88 : x
  2. Step 2: Convert to fraction form
    21,102.46/29,120.52 = 12,150.88/x
  3. Step 3: Cross multiply
    21,102.46x = 29,120.52 × 12,150.88
  4. Step 4: Simplify right side
    21,102.46x = 353,839,944.06
  5. Step 5: Solve for x
    x = 353,839,944.06/21,102.46
  6. Step 6: Final answer
    x = 16,767.71

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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.