Home / 21,634.39-29,857.55-13,134.54

Finding the Fourth Proportional to 21,634.39, 29,857.55 and 13,134.54

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Solution

The fourth proportional to 21,634.39, 29,857.55 and 13,134.54 is: 18,126.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,634.39 : 29,857.55 = 13,134.54 : x
  2. Step 2: Convert to fraction form
    21,634.39/29,857.55 = 13,134.54/x
  3. Step 3: Cross multiply
    21,634.39x = 29,857.55 × 13,134.54
  4. Step 4: Simplify right side
    21,634.39x = 392,165,119.10
  5. Step 5: Solve for x
    x = 392,165,119.10/21,634.39
  6. Step 6: Final answer
    x = 18,126.93

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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.