Home / 21,910.36-30,236.16-12,962.29

Finding the Fourth Proportional to 21,910.36, 30,236.16 and 12,962.29

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Solution

The fourth proportional to 21,910.36, 30,236.16 and 12,962.29 is: 17,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.36 : 30,236.16 = 12,962.29 : x
  2. Step 2: Convert to fraction form
    21,910.36/30,236.16 = 12,962.29/x
  3. Step 3: Cross multiply
    21,910.36x = 30,236.16 × 12,962.29
  4. Step 4: Simplify right side
    21,910.36x = 391,929,874.41
  5. Step 5: Solve for x
    x = 391,929,874.41/21,910.36
  6. Step 6: Final answer
    x = 17,887.88

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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.