Home / 21,093.12-29,107.08-11,660.40

Finding the Fourth Proportional to 21,093.12, 29,107.08 and 11,660.40

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Solution

The fourth proportional to 21,093.12, 29,107.08 and 11,660.40 is: 16,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.12 : 29,107.08 = 11,660.40 : x
  2. Step 2: Convert to fraction form
    21,093.12/29,107.08 = 11,660.40/x
  3. Step 3: Cross multiply
    21,093.12x = 29,107.08 × 11,660.40
  4. Step 4: Simplify right side
    21,093.12x = 339,400,195.63
  5. Step 5: Solve for x
    x = 339,400,195.63/21,093.12
  6. Step 6: Final answer
    x = 16,090.56

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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.