Home / 21,171.72-29,216.82-11,740.32

Finding the Fourth Proportional to 21,171.72, 29,216.82 and 11,740.32

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Solution

The fourth proportional to 21,171.72, 29,216.82 and 11,740.32 is: 16,201.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.72 : 29,216.82 = 11,740.32 : x
  2. Step 2: Convert to fraction form
    21,171.72/29,216.82 = 11,740.32/x
  3. Step 3: Cross multiply
    21,171.72x = 29,216.82 × 11,740.32
  4. Step 4: Simplify right side
    21,171.72x = 343,014,816.18
  5. Step 5: Solve for x
    x = 343,014,816.18/21,171.72
  6. Step 6: Final answer
    x = 16,201.56

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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.