Home / 11,805.80-17,708.13-2,921.09

Finding the Fourth Proportional to 11,805.80, 17,708.13 and 2,921.09

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Solution

The fourth proportional to 11,805.80, 17,708.13 and 2,921.09 is: 4,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.80 : 17,708.13 = 2,921.09 : x
  2. Step 2: Convert to fraction form
    11,805.80/17,708.13 = 2,921.09/x
  3. Step 3: Cross multiply
    11,805.80x = 17,708.13 × 2,921.09
  4. Step 4: Simplify right side
    11,805.80x = 51,727,026.86
  5. Step 5: Solve for x
    x = 51,727,026.86/11,805.80
  6. Step 6: Final answer
    x = 4,381.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.