Home / 21,835.82-30,133.54-12,761.71

Finding the Fourth Proportional to 21,835.82, 30,133.54 and 12,761.71

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Solution

The fourth proportional to 21,835.82, 30,133.54 and 12,761.71 is: 17,611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.82 : 30,133.54 = 12,761.71 : x
  2. Step 2: Convert to fraction form
    21,835.82/30,133.54 = 12,761.71/x
  3. Step 3: Cross multiply
    21,835.82x = 30,133.54 × 12,761.71
  4. Step 4: Simplify right side
    21,835.82x = 384,555,498.75
  5. Step 5: Solve for x
    x = 384,555,498.75/21,835.82
  6. Step 6: Final answer
    x = 17,611.22

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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.