Home / 21,600.05-29,807.93-12,171.65

Finding the Fourth Proportional to 21,600.05, 29,807.93 and 12,171.65

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Solution

The fourth proportional to 21,600.05, 29,807.93 and 12,171.65 is: 16,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.05 : 29,807.93 = 12,171.65 : x
  2. Step 2: Convert to fraction form
    21,600.05/29,807.93 = 12,171.65/x
  3. Step 3: Cross multiply
    21,600.05x = 29,807.93 × 12,171.65
  4. Step 4: Simplify right side
    21,600.05x = 362,811,481.29
  5. Step 5: Solve for x
    x = 362,811,481.29/21,600.05
  6. Step 6: Final answer
    x = 16,796.79

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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.