Home / 21,268.58-29,351.31-11,709.46

Finding the Fourth Proportional to 21,268.58, 29,351.31 and 11,709.46

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Solution

The fourth proportional to 21,268.58, 29,351.31 and 11,709.46 is: 16,159.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.58 : 29,351.31 = 11,709.46 : x
  2. Step 2: Convert to fraction form
    21,268.58/29,351.31 = 11,709.46/x
  3. Step 3: Cross multiply
    21,268.58x = 29,351.31 × 11,709.46
  4. Step 4: Simplify right side
    21,268.58x = 343,688,049.04
  5. Step 5: Solve for x
    x = 343,688,049.04/21,268.58
  6. Step 6: Final answer
    x = 16,159.43

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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.