Home / 21,268.31-29,350.49-11,709.16

Finding the Fourth Proportional to 21,268.31, 29,350.49 and 11,709.16

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Solution

The fourth proportional to 21,268.31, 29,350.49 and 11,709.16 is: 16,158.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.31 : 29,350.49 = 11,709.16 : x
  2. Step 2: Convert to fraction form
    21,268.31/29,350.49 = 11,709.16/x
  3. Step 3: Cross multiply
    21,268.31x = 29,350.49 × 11,709.16
  4. Step 4: Simplify right side
    21,268.31x = 343,669,451.57
  5. Step 5: Solve for x
    x = 343,669,451.57/21,268.31
  6. Step 6: Final answer
    x = 16,158.76

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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.