Home / 21,284.89-29,373.84-11,725.79

Finding the Fourth Proportional to 21,284.89, 29,373.84 and 11,725.79

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Solution

The fourth proportional to 21,284.89, 29,373.84 and 11,725.79 is: 16,181.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.89 : 29,373.84 = 11,725.79 : x
  2. Step 2: Convert to fraction form
    21,284.89/29,373.84 = 11,725.79/x
  3. Step 3: Cross multiply
    21,284.89x = 29,373.84 × 11,725.79
  4. Step 4: Simplify right side
    21,284.89x = 344,431,332.46
  5. Step 5: Solve for x
    x = 344,431,332.46/21,284.89
  6. Step 6: Final answer
    x = 16,181.97

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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.