Home / 21,716.31-29,973.32-13,216.65

Finding the Fourth Proportional to 21,716.31, 29,973.32 and 13,216.65

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Solution

The fourth proportional to 21,716.31, 29,973.32 and 13,216.65 is: 18,241.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.31 : 29,973.32 = 13,216.65 : x
  2. Step 2: Convert to fraction form
    21,716.31/29,973.32 = 13,216.65/x
  3. Step 3: Cross multiply
    21,716.31x = 29,973.32 × 13,216.65
  4. Step 4: Simplify right side
    21,716.31x = 396,146,879.78
  5. Step 5: Solve for x
    x = 396,146,879.78/21,716.31
  6. Step 6: Final answer
    x = 18,241.91

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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.