Home / 21,146.28-29,179.74-11,713.08

Finding the Fourth Proportional to 21,146.28, 29,179.74 and 11,713.08

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Solution

The fourth proportional to 21,146.28, 29,179.74 and 11,713.08 is: 16,162.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.28 : 29,179.74 = 11,713.08 : x
  2. Step 2: Convert to fraction form
    21,146.28/29,179.74 = 11,713.08/x
  3. Step 3: Cross multiply
    21,146.28x = 29,179.74 × 11,713.08
  4. Step 4: Simplify right side
    21,146.28x = 341,784,629.00
  5. Step 5: Solve for x
    x = 341,784,629.00/21,146.28
  6. Step 6: Final answer
    x = 16,162.87

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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.