Home / 21,817.16-30,104.40-12,255.22

Finding the Fourth Proportional to 21,817.16, 30,104.40 and 12,255.22

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Solution

The fourth proportional to 21,817.16, 30,104.40 and 12,255.22 is: 16,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.16 : 30,104.40 = 12,255.22 : x
  2. Step 2: Convert to fraction form
    21,817.16/30,104.40 = 12,255.22/x
  3. Step 3: Cross multiply
    21,817.16x = 30,104.40 × 12,255.22
  4. Step 4: Simplify right side
    21,817.16x = 368,936,044.97
  5. Step 5: Solve for x
    x = 368,936,044.97/21,817.16
  6. Step 6: Final answer
    x = 16,910.36

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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.