Home / 21,709.56-29,958.17-12,150.66

Finding the Fourth Proportional to 21,709.56, 29,958.17 and 12,150.66

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Solution

The fourth proportional to 21,709.56, 29,958.17 and 12,150.66 is: 16,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.56 : 29,958.17 = 12,150.66 : x
  2. Step 2: Convert to fraction form
    21,709.56/29,958.17 = 12,150.66/x
  3. Step 3: Cross multiply
    21,709.56x = 29,958.17 × 12,150.66
  4. Step 4: Simplify right side
    21,709.56x = 364,011,537.89
  5. Step 5: Solve for x
    x = 364,011,537.89/21,709.56
  6. Step 6: Final answer
    x = 16,767.34

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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.